mon: Monitor: log administrative actions via admin socket

Signed-off-by: Joao Eduardo Luis <joao.luis@inktank.com>
mon: Monitor: log aborted administrative actions via admin socket

Signed-off-by: Joao Eduardo Luis <joao.luis@inktank.com>
mon: Monitor: propagate return for functions called for admin socket

Signed-off-by: Joao Eduardo Luis <joao.luis@inktank.com>