Fix automatic signing
Fix automatic signing

Jenkins didn't like the previous expect script.  This one should work.

Change-Id: Ic94daef65f342a12f8f194163271f2204ba28b27

cneill/barbican,cloudkeep/barbican,openstack/barbican,openstack/barbican,MCDong/barbican,cloudkeep/barbican,jmvrbanac/barbican,MCDong/barbican,jmvrbanac/barbican,cneill/barbican