Pass msg sender through factory as operator

contracts/ServiceNodeContribution.sol

@@ -88,6 +88,10 @@ contract ServiceNodeContribution is Shared, IServiceNodeContribution {
     /// key, a signature and the fee the operator is charging.
     /// @param reserved The new array of reserved contributors with their
     /// proportion of stake they must fulfill in the node.
+    /// @param _operator The owner and operator of the node that will be
+    /// deployed from this multi-contribution contract and consequently the
+    /// recipient of the operator fee and admin access control of the
+    /// multi-contribution contract.
     /// @param _manualFinalize Configure if the contract automatically (or does
     /// not) finalize the contract upon receipt of a contribution that
     /// funds the total required staking requirement of the contract.
@@ -100,13 +104,14 @@ contract ServiceNodeContribution is Shared, IServiceNodeContribution {
         IServiceNodeRewards.BLSSignatureParams memory sig,
         IServiceNodeRewards.ServiceNodeParams memory params,
         IServiceNodeRewards.ReservedContributor[] memory reserved,
+        address _operator,
         bool _manualFinalize
     ) nzAddr(_stakingRewardsContract) nzUint(_maxContributors) {
         stakingRewardsContract = IServiceNodeRewards(_stakingRewardsContract);
         stakingRequirement     = stakingRewardsContract.stakingRequirement();
         SESH                   = IERC20(stakingRewardsContract.designatedToken());
         maxContributors        = _maxContributors;
-        operator               = tx.origin; // NOTE: Creation is delegated by operator through factory
+        operator               = _operator;
         address nilBeneficiary = address(0);
         _resetUpdateAndContribute(key, sig, params, reserved, _manualFinalize, nilBeneficiary, 0);
     }

contracts/ServiceNodeContributionFactory.sol

@@ -38,12 +38,13 @@ contract ServiceNodeContributionFactory is Initializable, Ownable2StepUpgradeabl
             sig,
             params,
             reserved,
+            msg.sender,
             manualFinalize
         );
 
         result = address(newContract);
         deployedContracts[result] = true;
-        emit NewServiceNodeContributionContract(result, params.serviceNodePubkey, tx.origin);
+        emit NewServiceNodeContributionContract(result, params.serviceNodePubkey, msg.sender);
         return result;
     }
 

contracts/test/ServiceNodeContributionEchidnaTest.sol

@@ -75,6 +75,7 @@ contract ServiceNodeContributionEchidnaTest {
             /*sig*/               blsSig,
             /*serviceNodeParams*/ snParams,
             /*reserved*/          reserved,
+            /*operator*/          snOperator,
             /*manualFinalize*/    false
         );