Pin tempest version
Pin tempest version

Currently tempest will not install due to us pinning
python-saharaclient to 0.7.5 while tempest requires 0.7.6.  Rather than
bumping python-saharaclient, this change will pin tempest to the commit
prior to requirements.txt updating.  This type of change was already
done to tempest in stable/icehouse.

Change-Id: I12fad99d32d6bc8c7096af0ac8bed5a849c24da8
Closes-Bug: #1402713

yanyao/openstack-deployment,sti-jans/openstack-ansible,bunchc/openstack-ansible,dhanunjaya/os-ansible-deployment,sigmavirus24/os-ansible-deployment,yanyao/openstack-ansible,Logan2211/openstack-ansible,BjoernT/os-ansible-deployment,bunchc/openstack-ansible,openstack/openstack-ansible,miguelgrinberg/os-ansible-deployment,yanyao/openstack-deployment-liberty,yanyao/openstack-deployment,yanyao/openstack-deployment,stackforge/os-ansible-deployment,mrda/openstack-ansible,open-switch/infra_openstack-ansible,achekunov/openstack-ansible,jpmontez/os-ansible-deployment,sigmavirus24/openstack-ansible,yanyao/openstack-ansible,jpmontez/os-ansible-deployment,manuelfelipe/openstack-ansible,mattt416/ansible-lxc-rpc,AlphaStaxLLC/os-ansible-deployment,cloudnull/os-ansible-deployment,major/os-ansible-deployment,weezer/openstack-ansible,sacharya/os-ansible-deployment,stevelle/os-ansible-deployment,VaneCloud/openstack-ansible,dhanunjaya/os-ansible-deployment,d34dh0r53/os-ansible-deployment,BjoernT/openstack-ansible,stevelle/os-ansible-deployment,BjoernT/openstack-ansible,shane-c/openstack-ansible,hughsaunders/openstack-ansible,hughsaunders/os-ansible-deployment,VaneCloud/openstack-ansible,mancdaz/openstack-ansible,shane-c/openstack-ansible,BjoernT/os-ansible-deployment,yanyao/newton,achekunov/openstack-ansible,yanyao/openstack-deployment-liberty,sacharya/os-ansible-deployment,sigmavirus24/os-ansible-deployment,VaneCloud/openstack-ansible,yanyao/openstack-deployment-liberty,cfarquhar/openstack-ansible,stackforge/os-ansible-deployment,mattt416/ansible-lxc-rpc,wenhuizhang/os-ansible-deployment,git-harry/os-ansible-deployment,shane-c/openstack-ansible,metral/os-ansible-deployment,sti-jans/openstack-ansible,Logan2211/openstack-ansible,d34dh0r53/os-ansible-deployment,achekunov/openstack-ansible,os-cloud/os-ansible-deployment,manuelfelipe/openstack-ansible,hughsaunders/os-ansible-deployment,wenhuizhang/os-ansible-deployment,antonym/openstack-ansible,mancdaz/openstack-ansible,mattt416/ansible-lxc-rpc,jpmontez/os-ansible-deployment,os-cloud/os-ansible-deployment,major/os-ansible-deployment,open-switch/infra_openstack-ansible,robb-romans/openstack-ansible,mattt416/ansible-lxc-rpc,miguelgrinberg/os-ansible-deployment,antonym/openstack-ansible,jpmontez/openstack-ansible,git-harry/os-ansible-deployment,weezer/openstack-ansible,major/openstack-ansible,jpmontez/openstack-ansible,hughsaunders/openstack-ansible,pombredanne/os-ansible-deployment,hughsaunders/os-ansible-deployment,AlphaStaxLLC/os-ansible-deployment,robb-romans/openstack-ansible,pombredanne/os-ansible-deployment,AlphaStaxLLC/os-ansible-deployment,hughsaunders/openstack-ansible,yanyao/openstack-deployment,cfarquhar/openstack-ansible,pombredanne/os-ansible-deployment,yanyao/newton,hughsaunders/os-ansible-deployment,openstack/openstack-ansible,jpmontez/openstack-ansible,sti-jans/openstack-ansible,mrda/openstack-ansible,BjoernT/os-ansible-deployment,cloudnull/os-ansible-deployment,sigmavirus24/openstack-ansible,mrda/openstack-ansible,stevelle/openstack-ansible,metral/os-ansible-deployment,stevelle/openstack-ansible,git-harry/os-ansible-deployment,antonym/openstack-ansible,major/openstack-ansible,manuelfelipe/openstack-ansible,open-switch/infra_openstack-ansible,hughsaunders/openstack-ansible