curtin-common changes: - curtin-common has no dependencies on python - util-linux >= 2.20.1 is in all ubuntu (precise+) so remove this dependency as util-linux is 'essential' python-curtin, python3-curtin: - drop 'curl' from dependencies of python-curtin or python3-curtin this was simply incorrect. wget is used, but curl is never. - explicitly list the python dependencies on oauthlib and yaml the attempt to have dh_python resolve these was just simply not working. so explicitly list them.
requirements.txt: - urllib3 is never used, drop it from here. - pbr is not needed. (it was probably copied from cloud-init)