[chore][ansible] Update linux tests to use locally built artifact

[crobert-1]

Description:

Changes have been broken down into individually described pieces below.

GitHub Workflow

Add build steps for building the linux packages locally. The built artifacts are then downloaded by the ansible linux test job under the runner's /tmp directory. As a result of needing to build packages and upload/download them, I changed the workflow's default path to be the repo's head, and the ansible test steps have the working directory as deployments/ansible.

Ansible functionality changes

When install_local_artifact is enabled, the splunk-otel-collector image is installed from /tmp on the controller machine. Functionality should remain unchanged when this variable is false.

Ansible test changes

Updated all existing molecule tests to use install_local_artifact which means that the package built from source is being used in testing, rather than a remote released version. Added a new test that uses a set version of the splunk-otel-collector to make sure that remote downloading and installation still works as expected on each platform.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 44.88%. Comparing base (ce02a29) to head (a784707).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #6284      +/-   ##
==========================================
- Coverage   44.89%   44.88%   -0.02%     
==========================================
  Files         390      390              
  Lines       26994    26994              
==========================================
- Hits        12119    12115       -4     
- Misses      14008    14012       +4     
  Partials      867      867              

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.

[crobert-1]

Note: Everything under default_install_remote_version was a direct copy from default. The only changes are as follows:

1. Remove the setting of install_local_artifact
2. Set splunk_otel_collector_version

[crobert-1]

Keeping up to date with the latest is what I believe is the best option available, as this artifact is not published by the splunk-otel-collector repo.

[jvoravong]

This seems fine since splunk_otel_auto_instrumentation_version updates infrequently. At worst, a new splunk_otel_auto_instrumentation_version release could occasionally cause a flaky Asnbile idempotency test failure, but that should be rare and low impact.

[crobert-1]

The added build steps in this workflow are copied from the linux_package_test workflow.

[crobert-1]

I removed the version check as the local artifact version would need to be parsed from filenames and then set as ansible variables to compare. This seems more complicated than it's worth, but I can the required logic and check if anyone feels strongly.

[jvoravong]

A couple small comments, overall LGTM and approving. I’ve used Ansible before but not with this project, so it maybe let this sit for other reviews as well.