Previously horizon micro-version support only supports one feature,
but there is a case where we need to support more than one feature
using micro-versioning. For example, "instance_description" and
"auto_allocated_network" in the server create operation both require
micro-version. This case was not supported previously.
This commit changes get_microversion() function to take a feature list
and looks up a micro-version which supports all requested features.
A known limitation is that we need to re-call get_microversion() with
different feature(s) if no micro-version which satisfies all requested
features is found and we would like to look up a micro-version which
supports a subset of the requested features. Most features are expected
in recent API versions, so I believe this would be a minor limitation.
Change-Id: I46f1c7fa1ddcf1dfac93d921cffaf3aa5ac011a7
Related-Bug: #1690433
4c8a294aee