[oauth2] Added test for resource owner password grant flow

.ci/travis/linux/before_install.sh

@@ -15,3 +15,4 @@
 ###########################################################################
 
 #pip3 install termcolor
+pip install psycopg2 numpy nose2 pyyaml mock future termcolor oauthlib

.ci/travis/macos/before_install.sh

@@ -28,7 +28,8 @@ pip3 install \
     pyyaml \
     mock \
     future \
-    termcolor
+    termcolor \
+    oauthlib
 
 brew install \
     qscintilla2 \

tests/src/python/CMakeLists.txt

@@ -266,6 +266,10 @@ IF (WITH_SERVER)
   ADD_PYTHON_TEST(PyQgsOfflineEditingWFS test_offline_editing_wfs.py)
   ADD_PYTHON_TEST(PyQgsAuthManagerPasswordOWSTest test_authmanager_password_ows.py)
   ADD_PYTHON_TEST(PyQgsAuthManagerPKIOWSTest test_authmanager_pki_ows.py)
+  ADD_PYTHON_TEST(PyQgsAuthManagerPKIPostgresTest test_authmanager_pki_postgres.py)
+  IF(WITH_OAUTH2_PLUGIN)
+    ADD_PYTHON_TEST(PyQgsAuthManagerOAuth2OWSTest test_authmanager_oauth2_ows.py)
+  ENDIF()
   ADD_PYTHON_TEST(PyQgsServerServices test_qgsserver_services.py)
   ADD_PYTHON_TEST(PyQgsServerModules test_qgsserver_modules.py)
   ADD_PYTHON_TEST(PyQgsServerRequest test_qgsserver_request.py)