[IA-4935] Generate azure prod vm password randomly

[LizBaldo]

Jira ticket: https://broadworkbench.atlassian.net/browse/[ticket_number]

Summary of changes

What

• Replaces the Azure VM password with a randomly generated one in prod

Why

• Sharing a single password was a high security risk that needs to be mitigated

Testing these changes

What to test

I will test on my BEE, switching the logic to check for the random password there, but when it comes to testing if it works in prod... Well I am not quite sure how I can mock that 😅

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 73.69%. Comparing base (2a1e544) to head (ccffe8b).

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #4526      +/-   ##
===========================================
+ Coverage    73.65%   73.69%   +0.03%     
===========================================
  Files          158      159       +1     
  Lines        14699    14717      +18     
  Branches      1160     1184      +24     
===========================================
+ Hits         10827    10845      +18     
  Misses        3872     3872              

Files	Coverage Δ
...titute/dsde/workbench/leonardo/config/Config.scala	97.74% <100.00%> (+<0.01%)	:arrow_up:
...e/workbench/leonardo/util/AzurePubsubHandler.scala	83.39% <100.00%> (+0.02%)	:arrow_up:
...ench/leonardo/util/AzurePubsubHandlerAlgebra.scala	100.00% <100.00%> (ø)

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[LizBaldo]

Going to force merge, this is an Azure change that has nothing to do with the GKE app creation failure that is a known flake