Add memcached zapp

1 job for master in 15 seconds (queued for 2 seconds)
Status Job ID Name Coverage
  Deploy
failed #2274
images

00:00:15

 
Name Stage Failure
failed
images Deploy There is an unknown failure, please try again
Executing busybox-1.25.1-r0.trigger
OK: 57 MiB in 30 packages
$ bash build_all.sh
$ python gen_json.py
File "gen_json.py", line 57
'ports': [
^
SyntaxError: invalid syntax
ERROR: Job failed: exit code 1