Set suspend feature flag in tempest for ironic

Suspend isn't a feature supported by ironic/baremetal.

Change-Id: I49b3b07f9ffd3fcbda8e32e48dcf20062ac7f7d8
diff --git a/lib/tempest b/lib/tempest
index d6d6020..8d107d5 100644
--- a/lib/tempest
+++ b/lib/tempest
@@ -384,6 +384,7 @@
         iniset $TEMPEST_CONFIG compute-feature-enabled resize False
         iniset $TEMPEST_CONFIG compute-feature-enabled shelve False
         iniset $TEMPEST_CONFIG compute-feature-enabled snapshot False
+        iniset $TEMPEST_CONFIG compute-feature-enabled suspend False
     fi
 
     # service_available