core: rename TemplateUser role

Renaming UserTemplate role to UserTemplateBaseVm
This was committed by mistake from commit :9cf86bf core: squash
03_00_0150_update_roles.sql

Change-Id: I06b67f49f4995f43b886494f6567e1a7cef29ae7
Bug-Url: https://bugzilla.redhat.com/show_bug.cgi?id=1007280
Signed-off-by: Eli Mesika <emesika@redhat.com>