(xenial-amd64)ppisati@gloin:~/ubuntu-xenial$ grep -Ri CGROUP debian/build/build-raspi2/.config 
CONFIG_BLK_CGROUP=y
CONFIG_CGROUPS=y
CONFIG_CGROUP_CPUACCT=y
# CONFIG_CGROUP_DEBUG is not set
CONFIG_CGROUP_DEVICE=y
CONFIG_CGROUP_FREEZER=y
CONFIG_CGROUP_NET_CLASSID=y
CONFIG_CGROUP_NET_PRIO=y
CONFIG_CGROUP_PERF=y
# CONFIG_CGROUP_PIDS is not set
CONFIG_CGROUP_SCHED=y
CONFIG_CGROUP_WRITEBACK=y
# CONFIG_DEBUG_BLK_CGROUP is not set
CONFIG_NETFILTER_XT_MATCH_CGROUP=m
CONFIG_NET_CLS_CGROUP=m