add conditional logic for unspecified runit_service instance name
add conditional logic for unspecified runit_service instance name

chef-cookbooks/memcached,opscode-cookbooks/memcached,chef-cookbooks/memcached,dastergon/memcached,dastergon/memcached,opscode-cookbooks/memcached,chef-cookbooks/memcached,dastergon/memcached,opscode-cookbooks/memcached