Since Ceilometer was removed from MOS 10.0 all system tests with
Ceilometer installation were disabled including Heat system tests.
Need to know that Ceilometer is required for only one Heat OSTF test
and it is enough to disable only one OSTF test instead all suite,
because otherwise we miss running and checking regular Heat scenarios.
Change-Id: Ieaa6c34c41824a0c3313eb60a615ccb5271797c6