Adjust knative-serving view setting (#758)

* added 3.11.51 host template

* Add Hands-On Lab for Advanced Cloud-Native App Development for RHTE 2019

* update workload

* update workload

* fix deployment issue

* fix deployment issue

* fix deployment

* update num_users

* delete dummy file

* update ocp_username

* update cdw pvc setting

* fix the Import realm

* update m4

* update cdw

* update workload to add kafka, knative

* delete Untitled-1

* add load-balancer-attributes

* add prewarm cdw

* add prewarm cdw

* add prewarm cdw

* remove node scaling

* Implement  Post Workload deployment tasks

* make sure if che is up

* make sure if che is up

* make sure if che is up

* improve output workshop info

* readjust knative-serving view setting