Retrieve tags based on resource id.

[jameszh]

Try to filter out tags based on resource id using get_all_tags, can't get it works
st2 run aws.vpc_get_all_tags filters='res_id=vol-xxxxxxxx,res_type=volume'

the filters is "string" in this case

while this works: st2 run aws.vpc_get_all_subnets filters='vpc_id=vpc-xxxxxxxx'
and the filters is "object" in the code.

please verify if I didn't get syntax right.