test_server: Fix install_hook
test_server: Fix install_hook

We cannot use erlang:unique_integer([positive]) here
since this code in run on older test releases as well.

legoscia/otp,cnbin/otp,ahmedshafeeq/otp,benoitc/otp-1,schlagert/otp,emacsmirror/erlang,cobusc/otp,cnbin/otp,gjaldon/otp,isvilen/otp,jj1bdx/otp,emacsmirror/erlang,electricimp/otp,krishnakumar4a4/otp,bjorng/otp,cnbin/otp,mikpe/otp,uabboli/otp,weisslj/otp,massemanet/otp,ferd/otp,vladdu/otp,RJ/otp,benoitc/otp-1,platinumthinker/otp,gjaldon/otp,electricimp/otp,matwey/otp,paladim/otp,platinumthinker/otp,RoadRunnr/otp,awetzel/otp,marquisthunder/otp,basho/otp,sdebnath/otp,lightcyphers/otp,sitexa/otp,lianghaivv/otp,erlang/otp,vinoski/otp,massemanet/otp,vic/otp,hairyhum/otp,potatosalad/otp,dumbbell/otp,jamesruan/otp,basho/otp,vic/otp,riverrun/otp,riverrun/otp,tuncer/otp,Teino1978-Corp/otp,Teino1978-Corp/otp,Teino1978-Corp/otp,lhslll/otp,emile/otp,vladdu/otp,RaimoNiskanen/otp,krishnakumar4a4/otp,bjorng/otp,mikpe/otp,c-rack/otp,vladdu/otp,goertzenator/otp,cnbin/otp,emile/otp,ferd/otp,weisslj/otp,dgud/otp,mikpe/otp,yangchengjian/otp,emile/otp,RichMorin/otp,jinshana/otp,sdebnath/otp,g-andrade/otp,sammoth-wazoku/otp,krishnakumar4a4/otp,bsmr-erlang/otp,isvilen/otp,ahmedshafeeq/otp,jj1bdx/otp,tuncer/otp,tuncer/otp,RGafiyatullin/otp,mujiatong/otp,jamesruan/otp,NOMORECOFFEE/otp,saleyn/otp,vic/otp,potatosalad/otp,neeraj9/otp,tuncer/otp,lemenkov/otp,lucafavatella/otp,falkevik/otp,lantti/otp,RaimoNiskanen/otp,rlipscombe/otp,mujiatong/otp,vinoski/otp,bjorng/otp,sitexa/otp,lianghaivv/otp,johanclaesson/otp,dumbbell/otp,bugs-erlang-org/otp,basho/otp,hairyhum/otp,sitexa/otp,lrascao/otp,ahmedshafeeq/otp,gjaldon/otp,electricimp/otp,release-project/otp,lhslll/otp,Teino1978-Corp/erlang-otp,VincentHHL/otp,psyeugenic/otp,paladim/otp,mujiatong/otp,lrascao/otp,vinoski/otp,platinumthinker/otp,saleyn/otp,matwey/otp,cobusc/otp,vic/otp,hairyhum/otp,falkevik/otp,kvakvs/otp,neeraj9/otp,benoitc/otp-1,lianghaivv/otp,basho/otp,g-andrade/otp,emile/otp,vinoski/otp,paulcager/otp,klarna/otp,riverrun/otp,tuncer/otp,potatosalad/otp,msantos/otp,falkevik/otp,yangchengjian/otp,bugs-erlang-org/otp,lhslll/otp,awetzel/otp,vic/otp,getong/otp,emacsmirror/erlang,bjorng/otp,johanclaesson/otp,lrascao/otp,ahmedshafeeq/otp,erlang/otp,matwey/otp,entropiae/otp,jamesruan/otp,dumbbell/otp,fenollp/otp,getong/otp,schlagert/otp,saleyn/otp,klarna/otp,paulcager/otp,schlagert/otp,krishnakumar4a4/otp,lantti/otp,c-rack/otp,basho/otp,msantos/otp,tuncer/otp,isvilen/otp,fenollp/otp,tuncer/otp,ader1990/otp,c-rack/otp,dumbbell/otp,lucafavatella/otp,saleyn/otp,entropiae/otp,marquisthunder/otp,beni55/otp,vinoski/otp,ader1990/otp,enikki/otp,enikki/otp,stolen/otp,vinoski/otp,rlipscombe/otp,schlagert/otp,johanclaesson/otp,GinjaNinja32/otp,mujiatong/otp,dgud/otp,aboroska/otp,RoadRunnr/otp,bugs-erlang-org/otp,uabboli/otp,jj1bdx/otp,dgud/otp,mikpe/otp,rlipscombe/otp,lightcyphers/otp,paladim/otp,lucafavatella/otp,lhslll/otp,ahmedshafeeq/otp,klarna/otp,potatosalad/otp,RGafiyatullin/otp,fenollp/otp,lightcyphers/otp,kvakvs/otp,paulcager/otp,vladdu/otp,GinjaNinja32/otp,saleyn/otp,RaimoNiskanen/otp,jj1bdx/otp,fenollp/otp,msantos/otp,dumbbell/otp,johanclaesson/otp,johanclaesson/otp,theom/otp,gjaldon/otp,neeraj9/otp,rlipscombe/otp,psyeugenic/otp,matwey/otp,psyeugenic/otp,potatosalad/otp,theom/otp,lucafavatella/otp,enikki/otp,msantos/otp,dumbbell/otp,lantti/otp,beni55/otp,bjorng/otp,palas/otp,jj1bdx/otp,RJ/otp,benoitc/otp-1,marquisthunder/otp,electricimp/otp,uabboli/otp,mikpe/otp,GinjaNinja32/otp,uabboli/otp,haguenau/otp,lucafavatella/otp,cnbin/otp,fenollp/otp,uabboli/otp,RJ/otp,goertzenator/otp,ferd/otp,derek121/otp,legoscia/otp,erlang/otp,aboroska/otp,krishnakumar4a4/otp,release-project/otp,Teino1978-Corp/otp,lucafavatella/otp,jinshana/otp,ferd/otp,riverrun/otp,uabboli/otp,ahmedshafeeq/otp,paulcager/otp,platinumthinker/otp,g-andrade/otp,lantti/otp,isvilen/otp,RoadRunnr/otp,kvakvs/otp,theom/otp,aboroska/otp,bugs-erlang-org/otp,palas/otp,jj1bdx/otp,massemanet/otp,haguenau/otp,dumbbell/otp,sammoth-wazoku/otp,bernardd/otp,emacsmirror/erlang,saleyn/otp,rlipscombe/otp,hairyhum/otp,VincentHHL/otp,RJ/otp,marquisthunder/otp,kvakvs/otp,RaimoNiskanen/otp,Teino1978-Corp/erlang-otp,psyeugenic/otp,lianghaivv/otp,emacsmirror/erlang,jinshana/otp,g-andrade/otp,gjaldon/otp,rlipscombe/otp,potatosalad/otp,basho/otp,emile/otp,lhslll/otp,sdebnath/otp,tuncer/otp,aboroska/otp,paulcager/otp,derek121/otp,RoadRunnr/otp,GinjaNinja32/otp,lantti/otp,johanclaesson/otp,bsmr-erlang/otp,RoadRunnr/otp,haguenau/otp,derek121/otp,legoscia/otp,c-rack/otp,legoscia/otp,lemenkov/otp,klarna/otp,jamesruan/otp,lantti/otp,hairyhum/otp,haguenau/otp,mikpe/otp,marquisthunder/otp,GinjaNinja32/otp,psyeugenic/otp,gjaldon/otp,RGafiyatullin/otp,lemenkov/otp,lianghaivv/otp,VincentHHL/otp,kvakvs/otp,basho/otp,Teino1978-Corp/erlang-otp,Teino1978-Corp/erlang-otp,potatosalad/otp,weisslj/otp,matwey/otp,beni55/otp,lucafavatella/otp,lemenkov/otp,psyeugenic/otp,emile/otp,isvilen/otp,jinshana/otp,sammoth-wazoku/otp,getong/otp,hairyhum/otp,erlang/otp,kvakvs/otp,falkevik/otp,beni55/otp,kvakvs/otp,bjorng/otp,krishnakumar4a4/otp,bernardd/otp,palas/otp,lightcyphers/otp,NOMORECOFFEE/otp,platinumthinker/otp,derek121/otp,entropiae/otp,jamesruan/otp,jinshana/otp,beni55/otp,vinoski/otp,potatosalad/otp,bernardd/otp,vinoski/otp,electricimp/otp,getong/otp,yangchengjian/otp,sammoth-wazoku/otp,getong/otp,ader1990/otp,schlagert/otp,beni55/otp,lrascao/otp,saleyn/otp,sitexa/otp,awetzel/otp,dumbbell/otp,lrascao/otp,bsmr-erlang/otp,GinjaNinja32/otp,release-project/otp,derek121/otp,uabboli/otp,emacsmirror/erlang,uabboli/otp,RGafiyatullin/otp,g-andrade/otp,marquisthunder/otp,neeraj9/otp,massemanet/otp,NOMORECOFFEE/otp,c-rack/otp,jemsbhai/otp,rlipscombe/otp,goertzenator/otp,lemenkov/otp,cnbin/otp,weisslj/otp,stolen/otp,RichMorin/otp,yangchengjian/otp,RoadRunnr/otp,fenollp/otp,fenollp/otp,bsmr-erlang/otp,bugs-erlang-org/otp,ader1990/otp,lightcyphers/otp,isvilen/otp,cobusc/otp,falkevik/otp,cobusc/otp,sitexa/otp,benoitc/otp-1,benoitc/otp-1,bjorng/otp,riverrun/otp,ader1990/otp,lhslll/otp,VincentHHL/otp,dgud/otp,sdebnath/otp,weisslj/otp,basho/otp,c-rack/otp,jemsbhai/otp,lrascao/otp,cobusc/otp,bsmr-erlang/otp,lrascao/otp,erlang/otp,jamesruan/otp,potatosalad/otp,emile/otp,krishnakumar4a4/otp,VincentHHL/otp,paladim/otp,lightcyphers/otp,bugs-erlang-org/otp,GinjaNinja32/otp,Teino1978-Corp/erlang-otp,Teino1978-Corp/otp,matwey/otp,bjorng/otp,lemenkov/otp,stolen/otp,Teino1978-Corp/erlang-otp,RichMorin/otp,sammoth-wazoku/otp,mikpe/otp,ader1990/otp,sdebnath/otp,palas/otp,sitexa/otp,bjorng/otp,RJ/otp,jemsbhai/otp,uabboli/otp,legoscia/otp,johanclaesson/otp,goertzenator/otp,haguenau/otp,mujiatong/otp,kvakvs/otp,bsmr-erlang/otp,RaimoNiskanen/otp,electricimp/otp,yangchengjian/otp,paladim/otp,sdebnath/otp,lantti/otp,awetzel/otp,cobusc/otp,goertzenator/otp,vladdu/otp,aboroska/otp,isvilen/otp,NOMORECOFFEE/otp,ahmedshafeeq/otp,riverrun/otp,emacsmirror/erlang,lhslll/otp,VincentHHL/otp,massemanet/otp,beni55/otp,palas/otp,falkevik/otp,weisslj/otp,massemanet/otp,legoscia/otp,awetzel/otp,platinumthinker/otp,saleyn/otp,VincentHHL/otp,vladdu/otp,schlagert/otp,sdebnath/otp,sammoth-wazoku/otp,lemenkov/otp,vladdu/otp,goertzenator/otp,vinoski/otp,Teino1978-Corp/otp,stolen/otp,dgud/otp,RoadRunnr/otp,msantos/otp,mikpe/otp,vic/otp,sammoth-wazoku/otp,RichMorin/otp,benoitc/otp-1,dgud/otp,weisslj/otp,legoscia/otp,stolen/otp,bugs-erlang-org/otp,aboroska/otp,derek121/otp,RichMorin/otp,NOMORECOFFEE/otp,jemsbhai/otp,bugs-erlang-org/otp,ferd/otp,legoscia/otp,ferd/otp,gjaldon/otp,goertzenator/otp,emacsmirror/erlang,palas/otp,matwey/otp,RaimoNiskanen/otp,dumbbell/otp,entropiae/otp,RaimoNiskanen/otp,yangchengjian/otp,lightcyphers/otp,fenollp/otp,g-andrade/otp,massemanet/otp,jj1bdx/otp,jj1bdx/otp,ahmedshafeeq/otp,entropiae/otp,platinumthinker/otp,g-andrade/otp,weisslj/otp,RaimoNiskanen/otp,paulcager/otp,fenollp/otp,falkevik/otp,bsmr-erlang/otp,falkevik/otp,goertzenator/otp,neeraj9/otp,mikpe/otp,potatosalad/otp,bernardd/otp,platinumthinker/otp,lianghaivv/otp,haguenau/otp,NOMORECOFFEE/otp,vladdu/otp,vic/otp,isvilen/otp,Teino1978-Corp/otp,ahmedshafeeq/otp,paulcager/otp,RGafiyatullin/otp,g-andrade/otp,krishnakumar4a4/otp,lemenkov/otp,jinshana/otp,RJ/otp,rlipscombe/otp,theom/otp,theom/otp,entropiae/otp,enikki/otp,bernardd/otp,mujiatong/otp,RichMorin/otp,aboroska/otp,VincentHHL/otp,release-project/otp,awetzel/otp,cobusc/otp,stolen/otp,mujiatong/otp,enikki/otp,emacsmirror/erlang,getong/otp,paladim/otp,getong/otp,lucafavatella/otp,erlang/otp,theom/otp,matwey/otp,paladim/otp,c-rack/otp,stolen/otp,riverrun/otp,getong/otp,lianghaivv/otp,lrascao/otp,ader1990/otp,awetzel/otp,marquisthunder/otp,getong/otp,msantos/otp,yangchengjian/otp,RoadRunnr/otp,enikki/otp,lrascao/otp,riverrun/otp,RichMorin/otp,schlagert/otp,neeraj9/otp,jamesruan/otp,klarna/otp,cnbin/otp,isvilen/otp,jemsbhai/otp,erlang/otp,enikki/otp,weisslj/otp,RoadRunnr/otp,jemsbhai/otp,lianghaivv/otp,entropiae/otp,bernardd/otp,dgud/otp,kvakvs/otp,dgud/otp,electricimp/otp,massemanet/otp,bernardd/otp,cnbin/otp,GinjaNinja32/otp,stolen/otp,paladim/otp,release-project/otp,klarna/otp,dgud/otp,erlang/otp,bernardd/otp,mikpe/otp,schlagert/otp,marquisthunder/otp,release-project/otp,isvilen/otp,vinoski/otp,legoscia/otp,vic/otp,jemsbhai/otp,vladdu/otp,msantos/otp,hairyhum/otp,basho/otp,lantti/otp,lhslll/otp,Teino1978-Corp/otp,enikki/otp,RJ/otp,paulcager/otp,msantos/otp,release-project/otp,electricimp/otp,jamesruan/otp,emile/otp,psyeugenic/otp,dgud/otp,haguenau/otp,jinshana/otp,g-andrade/otp,cobusc/otp,electricimp/otp,erlang/otp,erlang/otp,bsmr-erlang/otp,theom/otp,emile/otp,klarna/otp,sammoth-wazoku/otp,awetzel/otp,bernardd/otp,theom/otp,massemanet/otp,lightcyphers/otp,RGafiyatullin/otp,getong/otp,matwey/otp,sitexa/otp,rlipscombe/otp,bsmr-erlang/otp,benoitc/otp-1,hairyhum/otp,yangchengjian/otp,RGafiyatullin/otp,psyeugenic/otp,neeraj9/otp,jinshana/otp,johanclaesson/otp,RJ/otp,NOMORECOFFEE/otp,release-project/otp,c-rack/otp,RichMorin/otp,neeraj9/otp,jj1bdx/otp,g-andrade/otp,beni55/otp,ferd/otp,RaimoNiskanen/otp,sdebnath/otp,derek121/otp,goertzenator/otp,gjaldon/otp,emacsmirror/erlang,RGafiyatullin/otp,NOMORECOFFEE/otp,aboroska/otp,jj1bdx/otp,derek121/otp,ferd/otp,palas/otp,saleyn/otp,sitexa/otp,ader1990/otp,dumbbell/otp,mujiatong/otp,Teino1978-Corp/erlang-otp,ferd/otp,entropiae/otp,haguenau/otp,jemsbhai/otp,tuncer/otp,Teino1978-Corp/erlang-otp,klarna/otp,aboroska/otp,falkevik/otp,palas/otp,release-project/otp,bjorng/otp,rlipscombe/otp