This commit moves the packaging tests for elasticsearch-setup-passwords
to java from bats. The change also enables future tests to enable
security in Elasticsearch and automatically have waitForElasticsearch
work correctly, at least to the same extent it worked in bats, by
waiting on the ES port instead of health check.
relates #46005
This is in preparation to move to nested virtualization which is much slower
than the bare metal setup we use right now, but parallelizes better
resulting in a net win.t
The system level tests for our distributions have historically be run in
vagrant, and thus the name of the gradle project has been "vagrant".
However, as we move to running these tests in other environments (eg
GCP) the name vagrant no longer makes sense. This commit renames the
project to "os" (short for operating system), since these tests ensure
all of our distributions run correctly on our supported operating
systems.