Add python-cherrypy to salt api packages

Our formula strictly rely on cherrypy framework when running salt API.
This patch adds that dependency to api packages as when installing
recommended is disabled it won't be installed by default.

Change-Id: I12d9368b17f2d0bc33dded2d1a9c8abd9bfcd0b1
Related-Prod: PROD-18105

salt/map.jinja

@@ -166,6 +166,7 @@ RedHat:
 default:
   pkgs:
   - salt-api
+  - python-cherrypy3
   service: salt-api
 {%- endload %}