Test suite enhancements:

1. The user will specify the tablespace path in test_config.json.in
2.  If tablespace path not found, skip the test cases for that server(Only tablespace test cases)
3.  Add the skipped test summary in the test result. (Now it's showing on console + in log file, but need to update in a final enhanced test summary report. Which is research point we will work on that after finishing all nodes API test cases)
4.  Removed the test_ prefix from the values in the config files.
5. Add tablespace and roles tests

web/pgadmin/browser/tests/utils.py

@@ -0,0 +1,21 @@
+# ##########################################################################
+#
+# #pgAdmin 4 - PostgreSQL Tools
+#
+# #Copyright (C) 2013 - 2016, The pgAdmin Development Team
+# #This software is released under the PostgreSQL Licence
+#
+# ##########################################################################
+
+
+def change_password(self):
+    response = self.tester.get('/change', follow_redirects=True)
+    self.assertIn('pgAdmin 4 Password Change', response.data.decode(
+        'utf-8'))
+
+    response = self.tester.post('/change', data=dict(
+        password=self.password,
+        new_password=self.new_password,
+        new_password_confirm=self.new_password_confirm),
+                                follow_redirects=True)
+    self.assertIn(self.respdata, response.data.decode('utf-8'))