Restore json import for redis as well. Switch preference to simplejson for speed

lib/ansible/cache/jsonfile.py

@@ -20,9 +20,9 @@ import time
 import errno
 
 try:
-    import json
-except ImportError:
     import simplejson as json
+except ImportError:
+    import json
 
 from ansible import constants as C
 from ansible import utils

lib/ansible/cache/redis.py

@@ -21,6 +21,11 @@ import collections
 import sys
 import time
 
+try:
+    import simplejson as json
+except ImportError:
+    import json
+
 from ansible import constants as C
 from ansible.utils import jsonify
 from ansible.cache.base import BaseCacheModule