Add a tutorial to list Stackdrive groups, and read metrics for them. (#33)

* Update .test.sh so that the 'Group metrics' notebook can be tested.

* Add a tutorial to list Stackdrive groups, and read metrics for them.

* Add a link to the Group metrics notebook in the readme.

Author: supriyagarg

.test.sh

@@ -23,6 +23,9 @@
 #  3. Enabled billing in that project.
 #  4. Created at least one Google Compute Engine VM in that project (this is
 #     required by the monitoring 'Getting Started' notebook).
+#  5. Created a Stackdriver account, and a Stackdriver group containing one or
+#     more Google Compute Engine VMs (this is required by the monitoring 'Group
+#     metrics' notebook).
 #
 # If you do not have the assorted Datalab dependencies installed, then you can
 # run this inside of the Datalab kernel gateway environment using the following

Readme.ipynb

@@ -112,7 +112,10 @@
     "### Stackdriver Monitoring\n",
     "\n",
     "The tutorials for this module use a sample project. This project is not readable by everyone. In order to execute the tutorials, you will have to set a default project, and make sure that it has at least one GCE Instance.\n",
-    "* [**Getting Started**](tutorials/Stackdriver Monitoring/Getting started.ipynb) - Cloud Datalab allows you to access and analyze the monitoring data. For an overview of how to access the timeseries data, start here."
+    "* [**Getting Started**](tutorials/Stackdriver Monitoring/Getting started.ipynb) - Cloud Datalab allows you to access and analyze the monitoring data. For an overview of how to access the time series data, start here.\n",
+    "\n",
+    "\n",
+    "* [**Group Metrics**](tutorials/Stackdriver Monitoring/Group metrics.ipynb) - How to list Stackdriver groups, and query time series data for a given group."
    ]
   },
   {