Don't check api_interface for 'deployment' group

'deployment' hosts don't need api interface. Previous fix checked
if hosts belong global groups like [compute] or [control] which
is not correct because uses can create own groups and the check
won't work there at all. Here the logic is reversed - we blacklist
groups that don't need api_interface.

Change-Id: Ibaa94004016ba41a2ae5700c48522e254c6ee239
Closes-Bug: #1732846

ansible/roles/prechecks/tasks/main.yml

 ---
 - include: port_checks.yml
   when:
-    - inventory_hostname in groups['control'] or
-      inventory_hostname in groups['network'] or
-      inventory_hostname in groups['compute'] or
-      inventory_hostname in groups['monitoring']
+    - inventory_hostname not in groups['deployment']
 
 - include: service_checks.yml