Add security_group property to aws example stub
Add security_group property to aws example stub

Signed-off-by: Stev Witzel <cecd026af8549620363e324a20eb355bb1518e8c@pivotal.io>

pivotal-cf/cf-redis-release,geofffranks/cf-redis-release,sclevine/cf-redis-release,sjkyspa/cf-redis-broker,pivotal-cf/cf-redis-release,sclevine/cf-redis-release,jim80net/cf-redis-release,sjkyspa/cf-redis-broker,pivotal-cf/cf-redis-release,geofffranks/cf-redis-release,jim80net/cf-redis-release,sclevine/cf-redis-release