run_tests.sh OS X script fixes
run_tests.sh OS X script fixes

On OS X, '*' is not a valid grep modified for '[^[:space:]:]', nor is it
necessary when the lines being checked against must be prefixed with
neutron.tests.
Also, dirname was being called with an empty var, without quoting, resulting
in usage errors.

Closes-Bug: 1391858

Change-Id: I34ab0625a00809f68b7a44cb3a175a57ba0bd6d5

vveerava/Openstack,wolverineav/neutron,eonpatapon/neutron,gkotton/neutron,pnavarro/neutron,dhanunjaya/neutron,cloudbase/neutron,openstack/neutron,noironetworks/neutron,SmartInfrastructures/neutron,projectcalico/calico-neutron,JioCloud/neutron,sasukeh/neutron,aristanetworks/neutron,rdo-management/neutron,waltBB/neutron_read,leeseuljeong/leeseulstack_neutron,Stavitsky/neutron,asgard-lab/neutron,igor-toga/local-snat,mahak/neutron,bigswitch/neutron,sasukeh/neutron,antonioUnina/neutron,MaximNevrov/neutron,vivekanand1101/neutron,glove747/liberty-neutron,magic0704/neutron,noironetworks/neutron,alexandrucoman/vbox-neutron-agent,infobloxopen/neutron,mmnelemane/neutron,jumpojoy/neutron,wenhuizhang/neutron,klmitch/neutron,neoareslinux/neutron,blueboxgroup/neutron,suneeth51/neutron,paninetworks/neutron,cloudbase/neutron-virtualbox,CiscoSystems/neutron,chitr/neutron,rdo-management/neutron,jacknjzhou/neutron,swdream/neutron,huntxu/neutron,miyakz1192/neutron,eonpatapon/neutron,CiscoSystems/neutron,chitr/neutron,blueboxgroup/neutron,sebrandon1/neutron,mandeepdhami/neutron,gkotton/neutron,aristanetworks/neutron,dims/neutron,Metaswitch/calico-neutron,blueboxgroup/neutron,JioCloud/neutron,mandeepdhami/neutron,cisco-openstack/neutron,NeCTAR-RC/neutron,cloudbase/neutron-virtualbox,openstack/neutron,antonioUnina/neutron,jerryz1982/neutron,leeseuljeong/leeseulstack_neutron,watonyweng/neutron,infobloxopen/neutron,miyakz1192/neutron,SmartInfrastructures/neutron,Metaswitch/calico-neutron,wolverineav/neutron,silenci/neutron,eayunstack/neutron,takeshineshiro/neutron,vveerava/Openstack,gkotton/neutron,asgard-lab/neutron,CiscoSystems/neutron,JianyuWang/neutron,cisco-openstack/neutron,mahak/neutron,leeseuljeong/leeseulstack_neutron,vveerava/Openstack,waltBB/neutron_read,bgxavier/neutron,swdream/neutron,takeshineshiro/neutron,sebrandon1/neutron,bigswitch/neutron,skyddv/neutron,cloudbase/neutron,pnavarro/neutron,watonyweng/neutron,MaximNevrov/neutron,glove747/liberty-neutron,igor-toga/local-snat,alexandrucoman/vbox-neutron-agent,shahbazn/neutron,javaos74/neutron,magic0704/neutron,dhanunjaya/neutron,huntxu/neutron,JianyuWang/neutron,eayunstack/neutron,shahbazn/neutron,leeseulstack/openstack,mahak/neutron,adelina-t/neutron,jerryz1982/neutron,yanheven/neutron,SamYaple/neutron,apporc/neutron,yuewko/neutron,silenci/neutron,jumpojoy/neutron,NeCTAR-RC/neutron,mattt416/neutron,Stavitsky/neutron,apporc/neutron,leeseulstack/openstack,projectcalico/calico-neutron,neoareslinux/neutron,yuewko/neutron,SamYaple/neutron,jacknjzhou/neutron,bgxavier/neutron,skyddv/neutron,adelina-t/neutron,mmnelemane/neutron,leeseulstack/openstack,javaos74/neutron,wenhuizhang/neutron,mattt416/neutron,barnsnake351/neutron,suneeth51/neutron,barnsnake351/neutron,paninetworks/neutron,dims/neutron,openstack/neutron,klmitch/neutron,yanheven/neutron,vivekanand1101/neutron