Mark Virtuozzo Driver Unsupported

The Virtuozzo driver CI has not reported success in months
and the maintainers have not responded to any of the notes that
have been sent out.

As a result, we need to mark the drivers unsupported
for the T release.

Change-Id: Ic9c239baff19ec9cfbc1a114cdd9a899a34bedd6
(cherry picked from commit cf01d7eaf3)

cinder/volume/drivers/vzstorage.py

@@ -147,6 +147,9 @@ class VZStorageDriver(remotefs_drv.RemoteFSSnapDriver):
     VERSION = '1.1'
     CI_WIKI_NAME = "Virtuozzo_Storage_CI"
 
+    # TODO(jsbryant) Remove driver in the 'U' release if CI is not fixed.
+    SUPPORTED = False
+
     SHARE_FORMAT_REGEX = r'(?:(\S+):\/)?([a-zA-Z0-9_-]+)(?::(\S+))?'
 
     def __init__(self, execute=putils.execute, *args, **kwargs):

doc/source/reference/support-matrix.ini

@@ -260,7 +260,7 @@ driver.storpool=complete
 driver.synology=complete
 driver.vrtsaccess=missing
 driver.vrtscnfs=complete
-driver.vzstorage=complete
+driver.vzstorage=missing
 driver.vmware=complete
 driver.win_iscsi=complete
 driver.win_smb=complete

releasenotes/notes/virtuozzo-unsupported-645b47dceb0ddbd2.yaml

@@ -0,0 +1,14 @@
+---
+upgrade:
+  - |
+    The Virtuozzo driver has been marked as unsupported
+    and is now deprecated. ``enable_unsupported_driver`` will need
+    to be set to ``True`` in the driver's section in cinder.conf to
+    continue to use it.
+deprecations:
+  - |
+    The Virtuozzo driver has been marked as unsupported
+    and is now deprecated. ``enable_unsupported_driver`` will need
+    to be set to ``True`` in the driver's section in cinder.conf to
+    continue to use it. If its support status does not change, it
+    will be removed in the 'U' development cycle.