Improve ext dependencies scenarios to share scaleset

[maddieford]

Description

Issue #

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PR information

• Ensure development PR is based on the develop branch.
• 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

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 72.61%. Comparing base (3aebcdd) to head (497180f).
Report is 358 commits behind head on develop.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #3312      +/-   ##
===========================================
+ Coverage    71.97%   72.61%   +0.63%     
===========================================
  Files          103      114      +11     
  Lines        15692    17164    +1472     
  Branches      2486     2296     -190     
===========================================
+ Hits         11295    12464    +1169     
- Misses        3881     4146     +265     
- Partials       516      554      +38     

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[mgunnala]

maybe add a log message here that policy has been turned off?

[maddieford]

Added