Stabilize gate: Fix CONTROLLER_IP is .1 issue
Stabilize gate: Fix CONTROLLER_IP is .1 issue

There is still a bug in determining the host IP in a gate run
if it ends with .1 - this is due to the fact that the variable
has spaces in it so the -z test for a missing IP does not return
true.

This has been changed to ignore spaces.

Change-Id: I70701f1d3985b0347fd2aa796e712ead73ea9635
Closes-Bug: 1668674

openstack/trove,openstack/trove,zhangg/trove,hplustree/trove,hplustree/trove,zhangg/trove