Update ironic metadata to handle https on API

This patch updates ironic metadata to work with TLS on ironic API
side.

Change-Id: I07ad586639d24d3166f4e0581e23a5dad75e274c
Related-Prod: PROD-24466
diff --git a/ironic/conductor/single.yml b/ironic/conductor/single.yml
index e5005da..9cd2e06 100644
--- a/ironic/conductor/single.yml
+++ b/ironic/conductor/single.yml
@@ -37,6 +37,7 @@
           secret_key: ${_param:ironic_memcache_secret_key}
       identity:
         region: ${_param:openstack_region}
+        protocol: ${_param:cluster_internal_protocol}
       automated_clean: true
       erase_devices_priority: 0
       erase_devices_metadata_priority: 1
@@ -46,3 +47,4 @@
         - ipmitool-shellinabox
         - ipmitool-socat
         - no-console
+      pxe_append_params: 'nofb nomodeset vga=normal ipa-insecure=1'