Add Confluent UUID to identity image

The UUID and tls material usually comes from site, but some
OSes may depend entirely on the identity image, so
make the UUID available that way as well.

confluent_server/confluent/plugins/deployment/identimage.py

@@ -21,6 +21,7 @@
 import confluent.messages as msg
 import confluent.netutil as netutil
 import eventlet.green.subprocess as subprocess
+import confluent.config.configmanager as cfm
 import os
 import shutil
 import tempfile
@@ -51,6 +52,7 @@ def create_ident_image(node, configmanager):
     # It would be a reasonable enhancement to list all collective server addresses
     # restricted by 'managercandidates'
     ident['deploy_servers'] = []
+    ident['confluent_uuid'] = cfm.get_global('confluent_uuid')
     for myaddr in netutil.get_my_addresses():
         myaddr = socket.inet_ntop(myaddr[0], myaddr[1])
         ident['deploy_servers'].append(myaddr)