Cache Abstraction Layer for multiple backends

Provide an abstract class for managing multiple cache backends that can be used in projects needing a cache system.

I.E:

class BaseCache(object):
    passs

class Memcache(BaseCache):
    passs

class Redis(BaseCache):
    passs

def get_cache(....):
    """Gets from configs the cache backend to use"""

Could be imported like:

from openstack.common import cache

cache.get_cache()