GetPackageUI API is now called even if Glare is used
GetPackageUI API is now called even if Glare is used

Since UI definitions are now always provided by Murano API (even when
the packages themselves are stored in Glare), the muranoclient should
now call the 'get_ui' method of the legacy controller class instead of
the glare one.

Change-Id: Ie8936891bff443cdf5f8b97cb93e63cd781c0696
Depends-on: Id9327e4015e1c0a1553c0b1a0151a94ee4da2928
Partial-bug: #1565805

openstack/python-muranoclient,openstack/python-muranoclient