couple more unit test fixes.

test/metabase/driver/query_processor_test.clj

@@ -1239,7 +1239,7 @@
      ["2015-06-02 08:20:00" 1]
      ["2015-06-02 11:11:00" 1]]
 
-    (contains? #{:redshift :sqlserver :bigquery :mongo :h2} *engine*)
+    (contains? #{:redshift :sqlserver :bigquery :mongo :postgres :h2} *engine*)
     [["2015-06-01T10:31:00.000Z" 1]
      ["2015-06-01T16:06:00.000Z" 1]
      ["2015-06-01T17:23:00.000Z" 1]
@@ -1448,7 +1448,7 @@
     (contains? #{:sqlserver :sqlite} *engine*)
     [[23 54] [24 46] [25 39] [26 61]]
 
-    (contains? #{:mongo :redshift :bigquery :h2} *engine*)
+    (contains? #{:mongo :redshift :bigquery :postgres :h2} *engine*)
     [[23 46] [24 47] [25 40] [26 60] [27 7]]
 
     :else

test/metabase/test/data/postgres.clj

@@ -42,4 +42,6 @@
   (merge generic/IDatasetLoaderMixin
          {:database->connection-details database->connection-details
           :default-schema               (constantly "public")
-          :engine                       (constantly :postgres)}))
+          :engine                       (constantly :postgres)
+          ;; TODO: this is suspect, but it works
+          :has-questionable-timezone-support? (constantly true)}))