Feature 10981: add Openstack metrics collector and scale-out/in DAGs for autoscaling

Change-Id: Idff1974545d28208a853787d748f1839dffc69e5
Signed-off-by: aguilard <e.dah.tid@telefonica.com>
diff --git a/requirements.in b/requirements.in
index 6779aef..58bbbd4 100644
--- a/requirements.in
+++ b/requirements.in
@@ -21,6 +21,8 @@
 gnocchiclient
 google-api-python-client
 google-auth
+packaging==23.0
+prometheus-api-client
 prometheus-client
 python-ceilometerclient
 python-keystoneclient