[JENKINS-57841] Make yaml more consistent. remove unnecessary properties.

Author: kerogers-cloudbees

examples/multi-container.groovy

@@ -9,12 +9,16 @@ spec:
   containers:
   - name: maven
     image: maven:3.3.9-jdk-8-alpine
-    command: ['cat']
-    tty: true
+    command:
+    - sleep
+    args:
+    - 9999999
   - name: golang
     image: golang:1.8.0
-    command: ['sleep']
-    args: ['9999999']
+    command:
+    - sleep
+    args:
+    - 9999999
 """
   ) {
 

src/test/resources/org/csanchez/jenkins/plugins/kubernetes/pipeline/declarative.groovy

@@ -5,7 +5,6 @@ pipeline {
       containerTemplate {
         name 'maven'
         image 'maven:3.3.9-jdk-8-alpine'
-        ttyEnabled false
         command 'sleep'
         args '9999999'
       }