Reduce timeout when waiting for server deletion
Reduce timeout when waiting for server deletion

From 1 hour to 10 minutes.  If it isn't deleted, it will get
deleted by the next pass of the cleanup process.

Change-Id: I6dd1693d14fd215117ddbed8440ff4abe02c374c

seandst/nodepool,citrix-openstack/nodepool,Tesora/tesora-nodepool,Tesora/tesora-nodepool,citrix-openstack/nodepool,seandst/nodepool