Move installing salt dependencies to infra/config.yml

Change-Id: I212d8be2859a67fdd1eb0683a6ac5c90e4de9e06
diff --git a/classes/cluster/virtual-mcp11-aio-manila/infra/config.yml b/classes/cluster/virtual-mcp11-aio-manila/infra/config.yml
index 0f277d0..f073af7 100644
--- a/classes/cluster/virtual-mcp11-aio-manila/infra/config.yml
+++ b/classes/cluster/virtual-mcp11-aio-manila/infra/config.yml
@@ -9,6 +9,10 @@
       domain: ${_param:cluster_domain}
       purge_repos: ${_param:linux_system_purge_repos}
   salt:
+    api:
+      pkgs:
+        - salt-api
+        - python-cherrypy3
     master:
       worker_threads: 5
       environment: