sentinel: Add SentinelManagedSSLConnection (#1419)
sentinel: Add SentinelManagedSSLConnection (#1419)

Create a simple class which takes in both:
 - SentinelManaged
 - SSLConnection
in cases where the sentinel is being used with a TLS enabled redis
setup.
alisaifee/redis-py,redis/redis-py,alisaifee/redis-py,mozillazg/redis-py-doc,andymccurdy/redis-py,mozillazg/redis-py-doc,andymccurdy/redis-py,andymccurdy/redis-py,redis/redis-py