Setting up glance disk and container formats

- container_formats parameter support has been added
- disk_formats parameter support has been added

Change-Id: I0f64926f760b2d8926af15f5548d5f53f5b55e91
Prod-related: PROD-32324
diff --git a/README.rst b/README.rst
index 1bc559d..07bd013 100644
--- a/README.rst
+++ b/README.rst
@@ -18,6 +18,20 @@
         workers: 8
         glance_uid: 302
         glance_gid: 302
+        container_formats:
+          ami:
+            enabled: True
+          ari:
+            enabled: False
+          docker:
+            enabled: True
+        disk_formats:
+          vhd:
+            enabled: False
+          raw:
+            enabled: True
+          qcow2:
+            enabled: True
         policy:
           publicize_image:
             - "role:admin"