Authz for Agent v1 operator API

Of the agent's current v1 operator Calls,

• Some don't need authz:
  GET_HEALTH = 1
  GET_VERSION = 3;
  GET_METRICS = 4;
  GET_LOGGING_LEVEL = 5;

• Most of the others already have authz:
  LIST_FILES = 7;
  READ_FILE = 8;
  GET_STATE = 9;
  GET_FRAMEWORKS = 11;
  GET_EXECUTORS = 12;
  GET_TASKS = 13;
  LAUNCH_NESTED_CONTAINER = 14;
  WAIT_NESTED_CONTAINER = 15;
  KILL_NESTED_CONTAINER = 16;
  LAUNCH_NESTED_CONTAINER_SESSION = 17;
  ATTACH_CONTAINER_INPUT = 18;
  ATTACH_CONTAINER_OUTPUT = 19;

• Some don't have authz, but need it, and these are the ones we're worried about.
  GET_FLAGS = 2;
  SET_LOGGING_LEVEL = 6;
  GET_CONTAINERS = 10;