GitLab

Just like DECLARE_EVL_TUBE_CANISTER() should be used explicitly for
declaring a new canister type for a local tube, the same should be
done with DECLARE_EVL_TUBE_CANISTER_REL() for a shared tube. Stop
calling the latter implicitly from DECLARE_EVL_TUBE_REL(), to remain
consist with DECLARE_EVL_TUBE() usage.