Current update constraints patches replace all entries of a package with
an entry for the new version. But the upper-constraints file now needs
to have multiple entries with specific ";python_version=='x.x'" to be
able to handle differing requirements for packages that no longer
support Python 2, or even earlier Python 3 versions.
This adds awareness to the update script to only update the version for
matching python_version specifiers if they are present. It then falls
back to replacing the full line if the entry for the package does not
have any python_version markers at all.
Change-Id: I5e5e604fe9e461e45af0aa4446edd0af89d63381
Signed-off-by: Sean McGinnis <sean.mcginnis@gmail.com>
37b9019e96