Update multiattach tests

Multiattach tests use legacy format to create multiattach
volumes i.e. provide "multiattach=True" in request body of
a create volume operation.
This patch updates the multiattach tests to use multiattach
volume type, which is the standard and only way[1], to create
multiattach volumes.
Note that the old functionality will be changed by patch[2] and
passing multiattach=True in volume create request body will
error out with BadRequest.

Devstack will create the multiattach volume type, like an
operator will create in a real deployment, and set it as a
tempest config option (see depends on patch).

We are adding a new config option `volume_type_multiattach`
which is used as the multiattach volume type to create
multiattach volumes.

[1] https://docs.openstack.org/cinder/latest/admin/volume-multiattach.html#how-to-create-a-multiattach-volume
[2] https://review.opendev.org/c/openstack/cinder/+/874865

Depends-On: https://review.opendev.org/c/openstack/devstack/+/877337
Depends-On: https://review.opendev.org/c/openstack/devstack/+/877497
Depends-On: https://review.opendev.org/c/openstack/devstack/+/877548
Depends-On: https://review.opendev.org/c/openstack/devstack/+/877498
Depends-On: https://review.opendev.org/c/openstack/devstack/+/877499

Change-Id: I5f68ef56fcc55dfc636936dabb5e6ad761579519

tempest/api/compute/admin/test_volume_swap.py

@@ -199,11 +199,12 @@ class TestMultiAttachVolumeSwap(TestVolumeSwapBase):
            "server1"
         8. Check "volume2" is attached to "server1".
         """
+        multiattach_vol_type = CONF.volume.volume_type_multiattach
         # Create two volumes.
         # NOTE(gmann): Volumes are created before server creation so that
         # volumes cleanup can happen successfully irrespective of which volume
         # is attached to server.
-        volume1 = self.create_volume(multiattach=True)
+        volume1 = self.create_volume(volume_type=multiattach_vol_type)
         # Make volume1 read-only since you can't swap from a volume with
         # multiple read/write attachments, and you can't change the readonly
         # flag on an in-use volume so we have to do this before attaching
@@ -211,7 +212,7 @@ class TestMultiAttachVolumeSwap(TestVolumeSwapBase):
         # attach modes, then we can handle this differently.
         self.admin_volumes_client.update_volume_readonly(
             volume1['id'], readonly=True)
-        volume2 = self.create_volume(multiattach=True)
+        volume2 = self.create_volume(volume_type=multiattach_vol_type)
 
         # Create two servers and wait for them to be ACTIVE.
         validation_resources = self.get_class_validation_resources(

tempest/api/compute/admin/test_volumes_negative.py

@@ -115,9 +115,11 @@ class UpdateMultiattachVolumeNegativeTest(base.BaseV2ComputeAdminTest):
         5. Check "vol1" is still attached to both servers
         6. Check "vol2" is not attached to any server
         """
+        multiattach_vol_type = CONF.volume.volume_type_multiattach
+
         # Create two multiattach capable volumes.
-        vol1 = self.create_volume(multiattach=True)
-        vol2 = self.create_volume(multiattach=True)
+        vol1 = self.create_volume(volume_type=multiattach_vol_type)
+        vol2 = self.create_volume(volume_type=multiattach_vol_type)
 
         # Create two instances.
         validation_resources = self.get_class_validation_resources(

tempest/api/compute/volumes/test_attach_volume.py

@@ -369,7 +369,9 @@ class AttachVolumeMultiAttachTest(BaseAttachVolumeTest):
         kwargs = {}
         if bootable:
             kwargs['image_ref'] = CONF.compute.image_ref
-        return self.create_volume(multiattach=True, **kwargs)
+        multiattach_vol_type = CONF.volume.volume_type_multiattach
+        return self.create_volume(volume_type=multiattach_vol_type,
+                                  **kwargs)
 
     def _create_and_multiattach(self):
         """Creates two server instances and a volume and attaches to both.

tempest/config.py

@@ -1015,6 +1015,10 @@ VolumeGroup = [
     cfg.StrOpt('volume_type',
                default='',
                help='Volume type to be used while creating volume.'),
+    cfg.StrOpt('volume_type_multiattach',
+               default='',
+               help='Multiattach volume type used while creating multiattach '
+                    'volume.'),
     cfg.StrOpt('storage_protocol',
                default='iSCSI',
                help='Backend protocol to target when creating volume types'),