bitbake: toaster: Enable toastertable cache

Enable the cache and fix warning on the toastertable cache which happens
on the memcache backend "CacheKeyWarning: Cache key contains characters that
will cause errors if used with memcached"

(Bitbake rev: 330692e4e2e4dea59f70caa03001905ffff4860a)

Signed-off-by: Michael Wood <michael.g.wood@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

bitbake/lib/toaster/toastergui/widgets.py

@@ -36,6 +36,7 @@ import types
 import json
 import collections
 import operator
+import re
 
 from toastergui.views import objtojson
 
@@ -251,10 +252,12 @@ class ToasterTable(TemplateView):
         for key, val in kwargs.iteritems():
             cache_name = cache_name + str(key) + str(val)
 
+        # No special chars allowed in the cache name
+        cache_name = re.sub(r'[^A-Za-z0-9]', "", cache_name)
         data = cache.get(cache_name)
 
-        #if data:
-        #    return data
+        if data:
+            return data
 
         self.setup_columns(**kwargs)