Fix broken tests created after Galactic release

[SteveMacenski]

Since the Galactic release, our CI has been introduced with a number of failing tests. We fixed the trivial ones of linter profile changes, but there are still several nav2_utils tests that are failing that probably just need to be tweaked to pass again.

Goal: Look over the failures in CI, resolve them, and merge into the main branch

[SteveMacenski]

e.x. https://app.circleci.com/pipelines/github/ros-planning/navigation2/5602/workflows/02427c64-ce4a-4e0b-af82-db0f574413c9/jobs/20522

[karl-schulz]

Hi,
is this issue the reason why the Nav2 binaries for galactic are not yet available? Or are they just not released yet for other reasons?

sudo -H apt-get install -y -qq ros-galactic-nav2-core
yields
E: Unable to locate package ros-galactic-nav2-core

[SteveMacenski]

We're just waiting on a Galactic sync. I barely missed the first release of Galactic so some of the packages made it through and some did not. They're going to do a sync in the next few days so you should be able to get binaries then, the test failures in CI didn't block that.

[SteveMacenski]

We have flaky tests now, which is a slightly different problem. The core of this has been addressed and CI is turning over