libct/cgroups/fs: privatize Manager and its fields
libct/cgroups/fs: privatize Manager and its fields

This was generated entirely by gorename -- nothing to review here.

Signed-off-by: Kir Kolyshkin <3a017b8ddb3f9cf3e4a59978b004111bdeb97f08@gmail.com>

estesp/runc,xiaochenshen/runc,xiaochenshen/runc,mikebrow/runc,kolyshkin/runc,mikebrow/runc,kolyshkin/runc,opencontainers/runc,opencontainers/runc,rhatdan/runc,rhatdan/runc,rhatdan/runc,dqminh/runc,opencontainers/runc,estesp/runc,dqminh/runc,mikebrow/runc,xiaochenshen/runc,estesp/runc,kolyshkin/runc,rhatdan/runc,opencontainers/runc,dqminh/runc,dqminh/runc,kolyshkin/runc