This commit removes the relationship between the multi-tenant and
airship-core types. Since the airship-core type deploys LMA, adding an
LMA sub-cluster to the multi-tenant type would result in deployment of
the LMA stack twice if the inheritance is not removed.
Closes: #116
Signed-off-by: Drew Walters <andrew.walters@att.com>
Change-Id: Ie7dd236af3836d904e41df866e0c2351b7cb0558