Update Jenkinsfile with new pipeline syntaxes
Update Jenkinsfile with new pipeline syntaxes

Change-Id: Iac030bc55a8c127d3044a48e209368343a8436d3

cloudendpoints/esp,cloudendpoints/esp,cloudendpoints/esp,cloudendpoints/esp,cloudendpoints/esp,cloudendpoints/esp,cloudendpoints/esp,cloudendpoints/esp