Add functional tests for manage/unmanage of shares in DHSS=True

This patch adds functional tests for managing/unmanaging
share servers, shares, and snapshots in DHSS=True.

Change-Id: I452c2a99b186f53d737cb7fbd7eabfcfd9b249d6
Partially-implements: bp manage-unmanage-with-share-servers
diff --git a/manila_tempest_tests/config.py b/manila_tempest_tests/config.py
index 9d891ec..9c734f4 100644
--- a/manila_tempest_tests/config.py
+++ b/manila_tempest_tests/config.py
@@ -30,7 +30,7 @@
                help="The minimum api microversion is configured to be the "
                     "value of the minimum microversion supported by Manila."),
     cfg.StrOpt("max_api_microversion",
-               default="2.48",
+               default="2.49",
                help="The maximum api microversion is configured to be the "
                     "value of the latest microversion supported by Manila."),
     cfg.StrOpt("region",