Add ability to pass hardware metadata

Related-Prod: PRODX-00000
Change-Id: I4c377558ffe13e28f8ac5ced45262ff67556f46c
diff --git a/de/heat-templates/env/mstr3-wrkr6-cmp3-osd3.yaml b/de/heat-templates/env/mstr3-wrkr6-cmp3-osd3.yaml
index 8688a2a..f09a354 100644
--- a/de/heat-templates/env/mstr3-wrkr6-cmp3-osd3.yaml
+++ b/de/heat-templates/env/mstr3-wrkr6-cmp3-osd3.yaml
@@ -32,3 +32,4 @@
   gtw_metadata: {"labels": {"openvswitch":"enabled", "openstack-gateway": "enabled"}}
   lma_metadata: {"labels": {"role": "stacklight", "stacklight": "enabled"}}
   osd_metadata: {"labels": {"role": "ceph-osd-node"}}
+  hardware_metadata: ''