python-logilab: update pip and add pip-tools for pip-compile
Merged
requested to merge topic/default/use-newest-version-of-pip-in-python-logilab-image into branch/default
Pip latest version generally has some good improvement and we are starting to use pip-compile at least to pre-check that we don't have incompatible versions in our requirements (with the new template job "check-dependencies-resolution")