Fix E2E Extended tests by adding admin_username override.

[marrobi]

Updated the deployment process to require a valid user instead of a service principal, addressing the issue of E2E Extended tests failing. Added an admin_username parameter to enable username to be calculated.

Fixes #4396

[marrobi]

/test-extended

[github-actions]

Unit Test Results

0 tests   0 ✅  0s ⏱️
0 suites  0 💤
0 files    0 ❌

Results for commit da14bf7.

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[marrobi]

/test-extended

[github-actions]

🤖 pr-bot 🤖

🏃 Running extended tests: https://github.com/microsoft/AzureTRE/actions/runs/13459825935 (with refid 4ebc4385)

(in response to this comment from @marrobi)

[marrobi]

If this works, need to do Linux too.

[marrobi]

/test-extended

[github-actions]

🤖 pr-bot 🤖

🏃 Running extended tests: https://github.com/microsoft/AzureTRE/actions/runs/13464047928 (with refid 4ebc4385)

(in response to this comment from @marrobi)

[marrobi]

/test-extended

[github-actions]

🤖 pr-bot 🤖

🏃 Running extended tests: https://github.com/microsoft/AzureTRE/actions/runs/13464828303 (with refid 4ebc4385)

(in response to this comment from @marrobi)

[marrobi]

/test-extended

[github-actions]

🤖 pr-bot 🤖

🏃 Running extended tests: https://github.com/microsoft/AzureTRE/actions/runs/13471696441 (with refid 4ebc4385)

(in response to this comment from @marrobi)

[marrobi]

/test-force-approve

https://github.com/microsoft/AzureTRE/actions/runs/13471696441

[github-actions]

🤖 pr-bot 🤖

✅ Marking tests as complete (for commit da14bf7)

(in response to this comment from @marrobi)