We should not try to compile the code that is not being generated. This
helps preventing breaking changes but at the same time slows down
propagation of the real API changes. Downstream tools (i.e.
openstack_tui) need to be adapted in the PR propagating the sdk change
until we start generating tui code as well.
Change-Id: I3f583deb9b3c310a9b05371e583ba570f80bbb77
b346573617