Fix functional tests in gate

The check-glanceclient-dsvm-functional gate job was failing due to the
functional tests not picking up valid OpenStack credentials.

Update how we aquire credentials -- fixes side effect of how tox 2.0
handles environment variables.

Change-Id: Ia665dc9673d09421508476d05039d2da8a5e1a29
Closes-bug: 1455102

functional_creds.conf.sample

@@ -0,0 +1,8 @@
+# Credentials for functional testing
+[auth]
+uri = http://10.42.0.50:5000/v2.0
+
+[admin]
+user = admin
+tenant = admin
+pass = secrete

glanceclient/tests/functional/base.py

@@ -10,6 +10,7 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+import ConfigParser
 import os
 
 from tempest_lib.cli import base
@@ -30,10 +31,24 @@ class ClientTestBase(base.ClientTestBase):
 
     def __init__(self, *args, **kwargs):
         super(ClientTestBase, self).__init__(*args, **kwargs)
+
+        # Collecting of credentials:
+        #
+        # Support the existence of a functional_creds.conf for
+        # testing. This makes it possible to use a config file.
         self.username = os.environ.get('OS_USERNAME')
         self.password = os.environ.get('OS_PASSWORD')
         self.tenant_name = os.environ.get('OS_TENANT_NAME')
         self.uri = os.environ.get('OS_AUTH_URL')
+        config = ConfigParser.RawConfigParser()
+        if config.read('functional_creds.conf'):
+            # the OR pattern means the environment is preferred for
+            # override
+            self.username = self.username or config.get('admin', 'user')
+            self.password = self.password or config.get('admin', 'pass')
+            self.tenant_name = self.tenant_name or config.get('admin',
+                                                              'tenant')
+            self.uri = self.uri or config.get('auth', 'uri')
 
     def _get_clients(self):
         cli_dir = os.environ.get(

glanceclient/tests/functional/hooks/post_test_hook.sh

@@ -28,15 +28,28 @@ function generate_testr_results {
 
 export GLANCECLIENT_DIR="$BASE/new/python-glanceclient"
 
+sudo chown -R jenkins:stack $GLANCECLIENT_DIR
+
 # Get admin credentials
 cd $BASE/new/devstack
 source openrc admin admin
+# pass the appropriate variables via a config file
+CREDS_FILE=$GLANCECLIENT_DIR/functional_creds.conf
+cat <<EOF > $CREDS_FILE
+# Credentials for functional testing
+[auth]
+uri = $OS_AUTH_URL
+
+[admin]
+user = $OS_USERNAME
+tenant = $OS_TENANT_NAME
+pass = $OS_PASSWORD
+
+EOF
 
 # Go to the glanceclient dir
 cd $GLANCECLIENT_DIR
 
-sudo chown -R jenkins:stack $GLANCECLIENT_DIR
-
 # Run tests
 echo "Running glanceclient functional test suite"
 set +e