updating default services/images test suites to dynamically extract expected services/images based off profile

Change-Id: I2e36b9e5ad54d4a3306faabd21c365a0d365ac7c
diff --git a/src/test/setup/requirements.txt b/src/test/setup/requirements.txt
index 713b3e5..e6c8dab 100644
--- a/src/test/setup/requirements.txt
+++ b/src/test/setup/requirements.txt
@@ -17,6 +17,7 @@
 twisted
 pexpect
 apiclient
+pyyaml
 #python-libmaas
 #maasclient
 #maasutil