test(smoketest): split up sample applications, selectable using -t

[andrewazores]

• test(smoketest): split up sample applications, selectable using -t
• generic https config handling
• run cert setup/cleanup regardless of quarkus-cryostat-agent loaded
• fixup! test(smoketest): split up sample applications, selectable using -t
• clean up using script
• correct hostname in cert
• remove restart: without healthcheck
• add healthcheck

Welcome to Cryostat! 👋

Before contributing, make sure you have:

• Read the contributing guidelines
• Linked a relevant issue which this PR resolves
• Linked any other relevant issues, PR's, or documentation, if any
• Resolved all conflicts, if any
• Rebased your branch PR on top of the latest upstream main branch
• Attached at least one of the following labels to the PR: [chore, ci, docs, feat, fix, test]
• Signed all commits using a GPG signature

To recreate commits with GPG signature git fetch upstream && git rebase --force --gpg-sign upstream/main

---

Related to #403

Description of the change:

Splits up the sample-apps.yml into multiple files under a sample_apps directory. Each file can be selected by name using -t, or else -t all can be used. -t with no argument alone is the same as -t all, so this behaves the same as before.

Motivation for the change:

See #403 - as we add more applications for testing, it's nice to be able to pick and choose which ones to actually deploy, in case a particular test being performed only needs to test some subset of the test applications.

How to manually test:

1. Check out PR
2. ./smoketest.bash -h - should provide a comma-separated list of what all the sample application selection options are
3. ./smoketest.bash -t - should do the same as main
4. ./smoketest.bash -t all - should do the same as above
5. ./smoketest.bash -t gameserver - should only deploy the gameserver sample
6. ./smoketest.bash -t opensearch,quarkus-cryostat-agent - should deploy only the opensearch and quarkus-cryostat-agent samples
7. ./smoketest.bash -Ak -t opensearch,quarkus-cryostat-agent - should deploy only the opensearch and quarkus-cryostat-agent samples, and quarkus-cryostat-agent and Cryostat itself should not use TLS but should still work
8. Any other flag combination you care to test

[tthvo]

Looks good to me!