Restrict enabling the manage_volume volume feature

Not all Cinder backends support the 'manage volume' feature. The test that
in tempest for this feature is specific to LVM and will *not* work for
other work backends regardless of them supporting the feature.

Change-Id: I055aa66738deb5ae2fb925429cec565e3901340c
diff --git a/lib/tempest b/lib/tempest
index d95a9f5..95b25bc 100644
--- a/lib/tempest
+++ b/lib/tempest
@@ -439,7 +439,11 @@
         TEMPEST_VOLUME_MANAGE_SNAPSHOT=${TEMPEST_VOLUME_MANAGE_SNAPSHOT:-True}
     fi
     iniset $TEMPEST_CONFIG volume-feature-enabled manage_snapshot $(trueorfalse False TEMPEST_VOLUME_MANAGE_SNAPSHOT)
-
+    # Only turn on TEMPEST_VOLUME_MANAGE_VOLUME by default for "lvm" backends
+    if [[ "$CINDER_ENABLED_BACKENDS" == *"lvm"* ]]; then
+        TEMPEST_VOLUME_MANAGE_VOLUME=${TEMPEST_VOLUME_MANAGE_VOLUME:-True}
+    fi
+    iniset $TEMPEST_CONFIG volume-feature-enabled manage_volume $(trueorfalse False TEMPEST_VOLUME_MANAGE_VOLUME)
     # TODO(ameade): Remove the api_v3 flag when Mitaka and Liberty are end of life.
     iniset $TEMPEST_CONFIG volume-feature-enabled api_v3 True
     iniset $TEMPEST_CONFIG volume-feature-enabled api_v1 $(trueorfalse False TEMPEST_VOLUME_API_V1)