[20180904141452] Local Memcached and Bug Fixes

[ddollar]

• #2906 adding support for the memcached resource type in local racks [@camerondgray]
• #2907 tweak dockerfile init and health check params for rack [@ddollar]
• #2908 apps import includes parameters [@ddollar]
• #2911 wait for local rack to become available before returning [@ddollar]