redis: security bump to version 3.2.7

Release notes:
  https://www.reddit.com/r/redis/comments/5r8wxn/redis_327_is_out_important_security_fixes_inside/

From the notes:
Upgrade urgency HIGH.

This release fixes important security and correctness issues.  It is
especially important to upgrade for Redis Cluster users and for users
running Redis in their laptop since a cross-scripting attack is fixed in
this release.

[Peter: extend description]
Signed-off-by: Vicente Olivert Riera <Vincent.Riera@imgtec.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/redis/redis.hash

@@ -1,4 +1,4 @@
 # From https://github.com/antirez/redis-hashes/blob/master/README
-sha1	0c7bc5c751bdbc6fabed178db9cdbdd948915d1b 	redis-3.2.6.tar.gz
+sha1 6889af053020cd72ebb16805ead0ce9b3a69a9ef  redis-3.2.7.tar.gz
 # Calculated based on the hash above
-sha256	2e1831c5a315e400d72bda4beaa98c0cfbe3f4eb8b20c269371634390cf729fa	redis-3.2.6.tar.gz
+sha256 bf9df3e5374bfe7bfc3386380f9df13d94990011504ef07632b3609bb2836fa9  redis-3.2.7.tar.gz

package/redis/redis.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-REDIS_VERSION = 3.2.6
+REDIS_VERSION = 3.2.7
 REDIS_SITE = http://download.redis.io/releases
 REDIS_LICENSE = BSD-3c (core); MIT and BSD family licenses (Bundled components)
 REDIS_LICENSE_FILES = COPYING