PMM-14317: PG 18 support (#184)

* PMM-14517: Skeleton PG Setup

* PMM-14317: Fix spacing

Author: peterSirotnak

pmm_qa/scripts/database_options.py

@@ -38,7 +38,7 @@
                            "TARBALL": ""}
     },
     "PGSQL": {
-        "versions": ["11", "12", "13", "14", "15", "16", "17"],
+        "versions": ["11", "12", "13", "14", "15", "16", "18", "17"],
         "configurations": {"QUERY_SOURCE": "pgstatements", "CLIENT_VERSION": "3-dev-latest", "USE_SOCKET": "",
                            "SETUP_TYPE": ""}
     },