
OSH_PATH is not defined by default outside OpenStack's CI. This is a problem if a user wants to run scripts manually on its machine for local testing. This fixes it by having, by default, the OSH_PATH defined in the scripts using OSH relatively to current folder. For user experience, the script returns to the same path after running. Change-Id: I915e7d3c945f2002a2008b2b033a2b7725320b17