This message is being shown to people who should not be deciding whether
to upgrade pip, so it is just confusing and alarming noise.

Before:

---> pavelib.prereqs.install_prereqs
---> pavelib.prereqs.install_ruby_prereqs
Ruby prereqs unchanged, skipping...
---> pavelib.prereqs.install_node_prereqs
Node prereqs unchanged, skipping...
---> pavelib.prereqs.install_python_prereqs
pip install -q --exists-action w -r requirements/edx/pre.txt
You are using pip version 6.0.8, however version 7.1.2 is available.
You should consider upgrading via the 'pip install --upgrade pip' command.
pip install -q --exists-action w -r requirements/edx/github.txt
You are using pip version 6.0.8, however version 7.1.2 is available.
You should consider upgrading via the 'pip install --upgrade pip' command.
Could not find a tag or branch '96e1922348bfe6d99201b9512a9ed946c87b7e0b', assuming commit.
Could not find a tag or branch 'b0686a76f1ce3532088c4aee6e76b9abe61cc808', assuming commit.
Could not find a tag or branch '88ec8a011e481918fdc9d2682d4017c835acd8be', assuming commit.

After:

---> pavelib.prereqs.install_prereqs
---> pavelib.prereqs.install_ruby_prereqs
Ruby prereqs unchanged, skipping...
---> pavelib.prereqs.install_node_prereqs
Node prereqs unchanged, skipping...
---> pavelib.prereqs.install_python_prereqs
pip install -q --disable-pip-version-check --exists-action w -r requirements/edx/pre.txt
pip install -q --disable-pip-version-check --exists-action w -r requirements/edx/github.txt
Could not find a tag or branch '96e1922348bfe6d99201b9512a9ed946c87b7e0b', assuming commit.
Could not find a tag or branch 'b0686a76f1ce3532088c4aee6e76b9abe61cc808', assuming commit.
Could not find a tag or branch '88ec8a011e481918fdc9d2682d4017c835acd8be', assuming commit.