This avoids polluting the module path for other deployed projects,
like Tenks.

Change-Id: I17802f628e1e7db8d1f5caaa815170a8415e995c

This change also updates the CI test scripts to use PATH to find the
kolla-ansible script, rather than relying on the file in the source
checkout.

Using the script in the source checkout was hiding an issue with pip
install --user, although that has now been fixed in
I5b47a146627d06bb3fe4a747c5f20290c726b0f9.

Related-Bug: #1915527

Change-Id: I2827a657c8716a9c40391c6bdb7ff1a2a9c1260e
Depends-On: https://review.opendev.org/c/openstack/kolla-ansible/+/775586

Otherwise ara had only the stderr part and logs only the
stdout part which made ordered analysis harder.

Additionally add -vvv for the bootstrap-servers run.

Change-Id: Ia42ac9b90a17245e9df277c40bda24308ebcd11d
Signed-off-by: Radosław Piliszek <radoslaw.piliszek@gmail.com>

This change is intended to ease the addition of new test scenarios, by
splitting the existing setup_gate.sh script up into several smaller
scripts. We may wish to further break these scripts up in future,
depending on the requirements of new test jobs.

Change-Id: Ifa442ac79a54f749c56d20f5f7383c3852d95268