Don't install sahara in horizon integration tests
Don't install sahara in horizon integration tests

With final excision of sahara-dashboard from Horizon (and moving it
into a separate plugin repo, again), Horizon integration tests no
longer need to install Sahara in devstack vm. Hopefully this will make
tests to pass faster.

Change-Id: Ia910003a783ab1fb08144d963a55dc2b0438bf74
Depends-On: I99718970af78feeafc25dbb3aa9639ea2cf401ad

Tesora/tesora-project-config,Tesora/tesora-project-config,noorul/os-project-config,dongwenjuan/project-config,openstack-infra/project-config,noorul/os-project-config,openstack-infra/project-config,dongwenjuan/project-config