Fix actor when sending activity logs from the nodes_monitor

Author: nimrod-becker

src/server/node_services/nodes_monitor.js

@@ -415,7 +415,7 @@ class NodesMonitor extends EventEmitter {
             .then(() => {
                 this._dispatch_node_event(item, 'decommission',
                     `${item.node.name} was deactivated by ${req.account && req.account.email}`,
-                    req.account && req.account.email
+                    req.account && req.account._id
                 );
             })
             .then(() => {
@@ -440,7 +440,7 @@ class NodesMonitor extends EventEmitter {
             .then(() => {
                 this._dispatch_node_event(item, 'recommission',
                     `${item.node.name} was reactivated by ${req.account && req.account.email}`,
-                    req.account && req.account.email
+                    req.account && req.account._id
                 );
             });