Revert "Fix Cinder service type"

This reverts commit ac333d4823.

Reason for revert:

Switching cinder service type to block-storage is not very optimal because volumev3 seems to be the recommended and most widely adopted option[1][2][3].

Reverting this commit because it will break most of the production environments.

Related bug report suggests few proper solutions.

Related-Bug: #2098991

[1] https://docs.openstack.org/cinder/latest/install/cinder-controller-install-obs.html#:~:text=Create%20the%20cinderv3,%24
[2] https://opendev.org/openstack/kolla-ansible/src/branch/master/ansible/roles/cinder/defaults/main.yml#L331
[3] https://github.com/openstack/openstack-ansible-os_cinder/blob/master/defaults/main.yml#L189

Change-Id: Ie85ce4a2d1666d42ca2e378f77b9bcd3b0be7102

rally_openstack/common/consts.py

@@ -77,7 +77,7 @@ class _ServiceType(utils.ImmutableMixin, utils.EnumMixin):
     BLOCK_STORAGE = "block-storage"
     VOLUME = "volume"
     VOLUMEV2 = "volumev2"
-    VOLUMEV3 = "block-storage"
+    VOLUMEV3 = "volumev3"
     SHARE = "share"
     EC2 = "ec2"
     IMAGE = "image"