Use different labels for user and project names
Use different labels for user and project names

Modify the Install Guide to use different labels for user, role, and project
names.

Change-Id: I14303ae708e47a8782d4ccc2a8c2ee076bc071b8
Closes-Bug: 1746302

openstack/keystone,mahak/keystone,openstack/keystone,mahak/keystone,mahak/keystone,openstack/keystone