Test Fixes for 503 error

[gavin-aguiar]

Description

Fixes # https://github.com/Azure/azure-functions-pyfx-planning/issues/118

• Fixed Docker tests
• Added 3.11 for docker tests.
• Skipped extensions for http tests

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PR information

• The title of the PR is clear and informative.
• There are a small number of commits, each of which has an informative message. This means that previously merged commits do not appear in the history of the PR. For information on cleaning up the commits in your pull request, see this page.
• If applicable, the PR references the bug/issue that it fixes in the description.
• New Unit tests were added for the changes made and CI is passing.

Quality of Code and Contribution Guidelines

• I have read the contribution guidelines.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 85.44%. Comparing base (3dd54af) to head (943b68f).

Additional details and impacted files

@@            Coverage Diff             @@
##              dev    #1433      +/-   ##
==========================================
- Coverage   85.45%   85.44%   -0.01%     
==========================================
  Files          35       35              
  Lines        1966     1965       -1     
  Branches      370      370              
==========================================
- Hits         1680     1679       -1     
  Misses        213      213              
  Partials       73       73              

Flag	Coverage Δ
unittests	85.39% <100.00%> (-0.01%)	⬇️

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