Install required packages on the host

Change-Id: I4a89612ccfef792a55af9695a2edb581ef2f831b
diff --git a/src/charm.py b/src/charm.py
index 8b261c0..1d774d4 100755
--- a/src/charm.py
+++ b/src/charm.py
@@ -26,7 +26,7 @@
 
 class CinderCharmBase(CinderStoragePluginCharm):
 
-    PACKAGES = ["cinder-common"]
+    PACKAGES = ["charm-cinder-storpool-deps", "cinder-common"]
     MANDATORY_CONFIG = [
         "protocol",
         "storpool-template",