Colleen Murphy 782efb0f8a Fix pip distro package removal for focal
Ubuntu Focal doesn't have python-pip, only python3-pip. Trying to
uninstall a package that apt doesn't know about (installed or
uninstalled) results in a nonzero exit code so devstack fails. This
patch makes the package removal safer for both python2 and python3 cases
by checking first if the package exists.

Change-Id: I3b1118888cb0617ffb99b72c7e9a32308033783e
2020-05-11 18:28:32 -07:00
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