Add microversion fixture to set microversion
Currently microversion is being set via set method on service clients
and stored as instance variable.
That approach is little bit complicated and provides less
flexibility on microversion control from test side.
This commit add fixture to set and reset the microversion
and during that fixture scope set microversion will be used to send API request.
Partially implements blueprint api-microversions-testing-support
Change-Id: If2bc46e36dd44dce4c4bbb53bf9024c003f78b93
9 files changed