Install keystoneclient when running salt state

Install keystoneclient on nodes where keystone.server or
keystone.client are enabled. Since we enforcing keystone states
which require keystoneclient installed we have to install it
earlier when running salt state to make sure salt-minion is
restarted and load correct dependencies.

Change-Id: I51d18e075b77119f36c0bb9bffd8fde17ca62ae3
1 file changed