Fix versiontools.py to be compatible with bzr 2.1.x
Fix versiontools.py to be compatible with bzr 2.1.x


OSSystems/lava-server,Linaro/lava-server,Linaro/lava-server,OSSystems/lava-server,OSSystems/lava-server,Linaro/lava-server,Linaro/lava-server