postgresql version >=10 onwards does not require contrib package

Author: KoenDierckx

manifests/database/postgresql.pp

@@ -59,8 +59,11 @@
     # Only install pg_trgm extension, if database it is actually managed by the module
     if $manage_database {
 
-      # get the pg contrib to use pg_trgm extension
-      class { '::postgresql::server::contrib': }
+      # from postgresql version 10 onwards, this extension is no longer inside the contrib package, but is being bundled with the postgresql package itself
+      if (versioncmp($postgres_version, '10') < 0) {
+        # get the pg contrib to use pg_trgm extension
+        include postgresql::server::contrib
+      }
 
       postgresql::server::extension { 'pg_trgm':
         database => $database_name,