refactor nixos tests to use our config, build, migrations, init etc (#2038)

* feat: custom module for nixos test of postgres

* fix: include orioledb in vm test

* feat: updating tests to use lib.nix supabase settings

Author: samrose

nix/ext/tests/default.nix

@@ -3,16 +3,16 @@ let
   testsDir = ./.;
   testFiles = builtins.attrNames (builtins.readDir testsDir);
   nixFiles = builtins.filter (
-    name: builtins.match ".*\\.nix$" name != null && name != "default.nix"
+    name: builtins.match ".*\\.nix$" name != null && name != "default.nix" && name != "lib.nix"
   ) testFiles;
   extTest =
     extension_name:
     let
       pname = extension_name;
       inherit (pkgs) lib;
 
-      support_upgrade = if pname == "pg_repack" then false else true;
-      run_pg_regress = if pname == "pg_repack" then false else true;
+      support_upgrade = true;
+      run_pg_regress = true;
 
       installedExtension =
         postgresMajorVersion:
@@ -359,12 +359,10 @@ builtins.listToAttrs (
       "pg_jsonschema"
       "pg_net"
       "pg_partman"
-      "pg_repack"
       "pg_stat_monitor"
       "pg_tle"
       "pgaudit"
       "pgtap"
-      "postgis"
       "vector"
       "wal2json"
       "wrappers"