Allow for the default to specified for config.option

salt/modules/config.py

@@ -74,7 +74,7 @@ def valid_fileproto(uri):
         return False
 
 
-def option(value):
+def option(value, default=''):
     '''
     Pass in a generic option and recieve the value that will be assigned
     '''
@@ -86,7 +86,7 @@ def option(value):
         return __pillar__[value]
     elif value in defaults:
         return defaults[value]
-    return ''
+    return default
 
 
 def dot_vals(value):

salt/modules/mysql.py

@@ -101,8 +101,8 @@ def connect(**kwargs):
         if name in kwargs:
             connargs[key] = kwargs[name]
         else:
-            val = __salt__['config.option']('mysql.{0}'.format(name))
-            if val != '':
+            val = __salt__['config.option']('mysql.{0}'.format(name), None)
+            if val is not None:
                 connargs[key] = val
 
     _connarg('host')