Allow puppetlabs/postgresql 9.x

Author: smortex

metadata.json

@@ -14,7 +14,7 @@
     },
     {
       "name": "puppetlabs/postgresql",
-      "version_requirement": ">= 6.5.0 < 9.0.0"
+      "version_requirement": ">= 6.5.0 < 10.0.0"
     },
     {
       "name": "puppetlabs/firewall",