lldp-timeout kernel parameter missing ipa- prefix

Every other Ironic python agent kernel parameter is prefixed with "ipa-".
This patch allows users to use the old "lldp-timeout" parameter or the new
"ipa-lldp-timeout" parameter. Warning message is logged if "lldp-timeout"
parameter is used.

(Also fixed typo while I'm at it.)

Change-Id: Icc05ead31506628e4926be6549916a19cad48db3
Closes-Bug: #1588325

ironic_python_agent/utils.py

@@ -217,6 +217,13 @@ def get_agent_params():
         # Cache the parameters so that it can be used later on.
         _set_cached_params(params)
 
+        # Check to see if any deprecated parameters have been used
+        deprecated_params = {'lldp-timeout': 'ipa-lldp-timeout'}
+        for old_param, new_param in deprecated_params.items():
+            if params.get(old_param) is not None:
+                LOG.warning("The parameter '%s' has been deprecated. Please "
+                            "use %s instead.", old_param, new_param)
+
     return copy.deepcopy(params)