OSB-45: making bob global agent

LCU/Maintenance/Docker/Jenkinsfile

 pipeline {
-    agent none
-
+    agent {
+        label 'bob'
+    }
     environment {
             DOCKER_TAG = "${env.BUILD_TAG}"
     }
 
     stages {
         stage('Build') {
-            agent {
-                label 'bob'
-            }
+
             steps {
             
                 echo 'building tag ${env.DOCKER_TAG}'
@@ -40,6 +39,7 @@ pipeline {
             }
         }
         stage('Push to nexus') {
+
             steps {
 
                 script {