get_package_version fails to parse latest multipath version structure

Running an mutipath install in vmtest, we see this output:

[ 153.737956] cloud-init[1304]: Running command ['unshare', '--fork', '--pid', '--', 'chroot', '/tmp/tmpoq5zr8r5/target', 'dpkg-query', '--show', '--showformat', '${Version}', 'multipath-tools'] with allowed return codes [0] (capture=True)
[ 153.763045] cloud-init[1304]: get_package_version:
[ 153.763908] cloud-init[1304]: {'micro': '0+git1.656f8865', 'raw': '0.5.0+git1.656f8865-5ubuntu2.5', 'major': '0', 'name': 'multipath-tools', 'semantic_version': None, 'minor': '5', 'upstream': '0.5.0+git1.656f8865'}
[ 153.765984] cloud-init[1304]: multipath version is None (major=0 minor=5 micro=0+git1.656f8865)
[ 153.772042] cloud-init[1304]: failed reading multipath-tools version, assuming it wants no spaces in wwids: unorderable types: NoneType() < int()

Looks like the logic for determing the semantic version.