Signal the max v3 microversion for mitaka
During the interop microversion discussion at the Queens PTG
a question came up about when Cinder started supporting microversions
(Mitaka) and what the max was in that first release (3.0). That wasn't
clear from the API version history doc, so it's added here.
@@ -6,8 +6,8 @@ microversion change. The description for each version should be a
verbose one which has enough information to be suitable for use in
user documentation.
-3.0
----
+3.0 (Maximum in Mitaka)
+-----------------------
The 3.0 Cinder API includes all v2 core APIs existing prior to
the introduction of microversions. The /v3 URL is used to call
3.0 APIs.
