retain owner on modify view

altering views is doe through DROP/CREATE so the owner information needs
to persist even if the view existed in the old schema

Author: ruslantalpa

src/main/java/cz/startnet/utils/pgdiff/PgDiffViews.java

@@ -40,7 +40,7 @@ public static void createViews(final PrintWriter writer,
                 searchPathHelper.outputSearchPath(writer);
                 writer.println();
                 writer.println(newView.getCreationSQL());
-                if (newView.getOwnerTo() != null && oldView == null) {
+                if (newView.getOwnerTo() != null) {
                     writer.println();
                     writer.println("ALTER VIEW "
                             + PgDiffUtils.getQuotedName(newView.getName())

src/test/resources/cz/startnet/utils/pgdiff/modify_materialized_view_diff.sql

@@ -3,3 +3,5 @@ DROP MATERIALIZED VIEW IF EXISTS testview;
 
 CREATE MATERIALIZED VIEW testview AS
 	SELECT testtable.name, testtable.id FROM testtable;
+
+ALTER VIEW testview OWNER TO fordfrog;

src/test/resources/cz/startnet/utils/pgdiff/modify_view_diff.sql

@@ -3,3 +3,5 @@ DROP VIEW IF EXISTS testview;
 
 CREATE VIEW testview AS
 	SELECT testtable.name, testtable.id FROM testtable;
+
+ALTER VIEW testview OWNER TO fordfrog;