Missing validator

This patch adds validator to CONFIG_SWIFT_STORAGES to make clear
that values have to be paths only (without IP addresses).

Change-Id: Ia5327ac2df0e8123f75934fdb3ae21dcf839f69c
Fixes: rhbz#1128303

packstack/plugins/swift_600.py

@@ -52,7 +52,7 @@ def initConfig(controller):
                    "setup"),
          "PROMPT": "Enter the Swift Storage devices e.g. /path/to/dev",
          "OPTION_LIST": [],
-         "VALIDATORS": [],
+         "VALIDATORS": [validate_storage],
          "DEFAULT_VALUE": '',
          "MASK_INPUT": False,
          "LOOSE_VALIDATION": True,
@@ -162,6 +162,15 @@ def initSequences(controller):
 
 #------------------------- helper functions -------------------------
 
+def validate_storage(param, options=None):
+    if not param:
+        return
+    if not param.startswith('/'):
+        raise ParamValidationError(
+            'Storage value has to be in format "/path/to/device".'
+        )
+
+
 def validate_storage_size(param, options=None):
     match = re.match(r'\d+G|\d+M|\d+K', param, re.IGNORECASE)
     if not match: