Fix test case `gen_tcp_api_SUITE:t_connect_timeout`
Fix test case `gen_tcp_api_SUITE:t_connect_timeout`

This commit makes the test case `t_connect_timeout` in the test suite
gen_tcp_api_SUITE more reliable by searching for unused IP addresses
in a larger range of IP addresses.

RoadRunnr/otp,emacsmirror/erlang,jj1bdx/otp,dumbbell/otp,erlang/otp,kvakvs/otp,mikpe/otp,rlipscombe/otp,lrascao/otp,isvilen/otp,isvilen/otp,dumbbell/otp,uabboli/otp,erlang/otp,vinoski/otp,vinoski/otp,getong/otp,dumbbell/otp,electricimp/otp,uabboli/otp,isvilen/otp,bjorng/otp,erlang/otp,g-andrade/otp,RoadRunnr/otp,electricimp/otp,dumbbell/otp,emacsmirror/erlang,vinoski/otp,dgud/otp,vladdu/otp,ferd/otp,potatosalad/otp,bjorng/otp,ferd/otp,jj1bdx/otp,jj1bdx/otp,mikpe/otp,g-andrade/otp,jj1bdx/otp,getong/otp,dumbbell/otp,mikpe/otp,jj1bdx/otp,dumbbell/otp,rlipscombe/otp,ferd/otp,dgud/otp,lrascao/otp,getong/otp,kvakvs/otp,mikpe/otp,lrascao/otp,isvilen/otp,vladdu/otp,vladdu/otp,potatosalad/otp,uabboli/otp,uabboli/otp,vinoski/otp,g-andrade/otp,mikpe/otp,vinoski/otp,vinoski/otp,dumbbell/otp,ferd/otp,bjorng/otp,isvilen/otp,mikpe/otp,electricimp/otp,lrascao/otp,jj1bdx/otp,bjorng/otp,bjorng/otp,vinoski/otp,getong/otp,mikpe/otp,kvakvs/otp,getong/otp,rlipscombe/otp,electricimp/otp,erlang/otp,mikpe/otp,lrascao/otp,g-andrade/otp,emacsmirror/erlang,erlang/otp,dgud/otp,getong/otp,rlipscombe/otp,rlipscombe/otp,getong/otp,rlipscombe/otp,potatosalad/otp,rlipscombe/otp,RoadRunnr/otp,vinoski/otp,emacsmirror/erlang,emacsmirror/erlang,dgud/otp,vladdu/otp,emacsmirror/erlang,RoadRunnr/otp,RoadRunnr/otp,kvakvs/otp,g-andrade/otp,getong/otp,dgud/otp,isvilen/otp,mikpe/otp,RoadRunnr/otp,vladdu/otp,bjorng/otp,uabboli/otp,emacsmirror/erlang,jj1bdx/otp,erlang/otp,potatosalad/otp,dumbbell/otp,g-andrade/otp,ferd/otp,electricimp/otp,vladdu/otp,uabboli/otp,vladdu/otp,kvakvs/otp,dgud/otp,emacsmirror/erlang,jj1bdx/otp,isvilen/otp,g-andrade/otp,erlang/otp,getong/otp,rlipscombe/otp,uabboli/otp,jj1bdx/otp,vladdu/otp,jj1bdx/otp,isvilen/otp,RoadRunnr/otp,ferd/otp,vinoski/otp,bjorng/otp,rlipscombe/otp,bjorng/otp,bjorng/otp,erlang/otp,dgud/otp,kvakvs/otp,potatosalad/otp,potatosalad/otp,getong/otp,uabboli/otp,ferd/otp,lrascao/otp,potatosalad/otp,isvilen/otp,g-andrade/otp,kvakvs/otp,bjorng/otp,electricimp/otp,kvakvs/otp,potatosalad/otp,emacsmirror/erlang,dgud/otp,rlipscombe/otp,kvakvs/otp,erlang/otp,RoadRunnr/otp,potatosalad/otp,RoadRunnr/otp,g-andrade/otp,dumbbell/otp,g-andrade/otp,emacsmirror/erlang,potatosalad/otp,dumbbell/otp,dgud/otp,vinoski/otp,lrascao/otp,uabboli/otp,erlang/otp,lrascao/otp,dgud/otp,electricimp/otp,ferd/otp,vladdu/otp,lrascao/otp,ferd/otp,mikpe/otp,electricimp/otp,isvilen/otp,electricimp/otp