CSUB-1322: Include repository name as part of self-hosted runner hostname

[atodorov]

Description of proposed changes

Include the repository name as part of the self-hosted runner VM hostname, to make it easier to connect VM -> repository -> workflow:

Old names at top of image, new names below:

NOTE: the reported MegaLinter failure is unrelated, see #483 (comment)

NOTE: provisioning & running on Azure using the new naming scheme appears to be working as well, see:
https://github.com/gluwa/creditcoin3/actions/runs/11290155122/job/31401798798?pr=509

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Practical tips for PR review & merge:

• All GitHub Actions report PASS
• Newly added code/functions have unit tests
  • Coverage tools report all newly added lines as covered
  • The positive scenario is exercised
  • Negative scenarios are exercised, e.g. assert on all possible errors
  • Assert on events triggered if applicable
  • Assert on changes made to storage if applicable
• Modified behavior/functions - try to make sure above test items are covered
• Integration tests are added if applicable/needed

[github-actions]

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