prep liberty amulet tests, update readme

tests/020-basic-trusty-liberty

@@ -0,0 +1,12 @@
+#!/usr/bin/python
+
+"""Amulet tests on a basic nova cloud controller deployment on
+   trusty-liberty."""
+
+from basic_deployment import NovaCCBasicDeployment
+
+if __name__ == '__main__':
+    deployment = NovaCCBasicDeployment(series='trusty',
+                                       openstack='cloud:trusty-liberty',
+                                       source='cloud:trusty-updates/liberty')
+    deployment.run_tests()

tests/021-basic-wily-liberty

@@ -0,0 +1,10 @@
+#!/usr/bin/python
+
+"""Amulet tests on a basic nova cloud controller deployment on
+   wily-liberty."""
+
+from basic_deployment import NovaCCBasicDeployment
+
+if __name__ == '__main__':
+    deployment = NovaCCBasicDeployment(series='wily')
+    deployment.run_tests()

tests/README

@@ -1,6 +1,16 @@
 This directory provides Amulet tests that focus on verification of Nova Cloud
 Controller deployments.
 
+test_* methods are called in lexical sort order, although each individual test
+should be idempotent, and expected to pass regardless of run order.
+
+Test name convention to ensure desired test order:
+    1xx service and endpoint checks
+    2xx relation checks
+    3xx config checks
+    4xx functional checks
+    9xx restarts and other final checks
+
 In order to run tests, you'll need charm-tools installed (in addition to
 juju, of course):
     sudo add-apt-repository ppa:juju/stable