[TrivialFix] Rename run_tests.py to run_tests.sh
[TrivialFix] Rename run_tests.py to run_tests.sh

Change-Id: Ia71748323f60ec806b1f8cd02f50997ec6e2b23c

noironetworks/horizon,NeCTAR-RC/horizon,BiznetGIO/horizon,bac/horizon,bigswitch/horizon,NeCTAR-RC/horizon,sandvine/horizon,noironetworks/horizon,bigswitch/horizon,wolverineav/horizon,ChameleonCloud/horizon,bac/horizon,openstack/horizon,ChameleonCloud/horizon,BiznetGIO/horizon,NeCTAR-RC/horizon,noironetworks/horizon,yeming233/horizon,noironetworks/horizon,sandvine/horizon,bac/horizon,coreycb/horizon,wolverineav/horizon,wolverineav/horizon,yeming233/horizon,BiznetGIO/horizon,ChameleonCloud/horizon,bac/horizon,ChameleonCloud/horizon,coreycb/horizon,openstack/horizon,sandvine/horizon,openstack/horizon,yeming233/horizon,wolverineav/horizon,openstack/horizon,coreycb/horizon,BiznetGIO/horizon,sandvine/horizon,NeCTAR-RC/horizon,coreycb/horizon,bigswitch/horizon,bigswitch/horizon,yeming233/horizon