Set code-coverage limit scope

Signed-off-by: Taufan Aditya <toopay@taufanaditya.com>
diff --git a/tests/travis/pgsql.phpunit.xml b/tests/travis/pgsql.phpunit.xml
index 51e433d..bfddbf6 100644
--- a/tests/travis/pgsql.phpunit.xml
+++ b/tests/travis/pgsql.phpunit.xml
@@ -18,7 +18,7 @@
 		</testsuite>
 	</testsuites>
 	<filter>
-        <whitelist addUncoveredFilesFromWhitelist="true">
+        <whitelist addUncoveredFilesFromWhitelist="false">
             <directory suffix=".php">../../system</directory>
         </whitelist>
 	</filter>