Change location of jenkins slave space mount

I believe mounting at home is causing issues when setting up the kubectl
since multiple machines are trying to edit the kubeconfig at the same
time. The kubeconfig is under "/home/jenkins/.kube". Changed the way the
mount mounted so that it mounts to "${HOME}/workspace" for all the jobs
launched into kubernetes. 

Change-Id: I34038e44f80f90d6905dd3036b91874502aaab07
Signed-off-by: Alanny Lopez <Alanny.Lopez@ibm.com>
8 files changed