Drop RedHat / CentOS 7 support and add 9

Author: wyardley

manifests/init.pp

@@ -499,7 +499,6 @@
   }
 
   # when repos_ensure is true, we configure externel repos
-  # CentOS 7 doesn't contain rabbitmq. It's only in EPEL.
   if $repos_ensure {
     case $facts['os']['family'] {
       'RedHat': {
@@ -513,13 +512,6 @@
       default: {
       }
     }
-  } elsif ($facts['os']['family'] == 'RedHat' and $facts['os']['release']['major'] == '7') and $require_epel {
-    # On later CentOS / RHEL systems, this is not useful since EPEL doesn't
-    # have the rabbitmq-server package anyway.
-    #
-    # Once support for 7 is dropped, we should remove this code and the
-    # parameter
-    require epel
   }
 
   contain rabbitmq::install

metadata.json

@@ -11,13 +11,13 @@
     {
       "operatingsystem": "RedHat",
       "operatingsystemrelease": [
-        "7"
+        "9"
       ]
     },
     {
       "operatingsystem": "CentOS",
       "operatingsystemrelease": [
-        "7"
+        "9"
       ]
     },
     {