[ps-installation-script] better error message in case of failed instrumentation installer download

[lachmatt]

Description:
Produce a better message in case of failed attempt to download .NET instrumentation installer.
Follows the same pattern as other download attempts in the script (e.g. 1).
Additionally, sets the security protocol (which might be needed on a legacy systems) similarly to other downloads in the script (1,2).

[RassK]

should include tls13?

[RassK]

This should do the trick, may need to add comment that 3072 is TLS 1.2 and 12288 is TLS 1.3
[Net.ServicePointManager]::SecurityProtocol = 3072 -bor 12288

[lachmatt]

I considered that but decided it'd be preferable to:

• set it consistently in the script (as similar is configured in multiplace places already)
• use enum values instead of magic numbers e.g.
  [Net.ServicePointManager]::SecurityProtocol = [Net.ServicePointManager]::SecurityProtocol -bor [Net.SecurityProtocolType]::Tls12 -bor [Net.SecurityProtocolType]::Tls13

[RassK]

Makes sense to separate it to a new issue then, if there are multiple places. The idea is not to require older security protocols but instead use newest as possible and fallback if not possible.

[Net.SecurityProtocolType]::Tls13 is available in .NET FX 4.8+. I think PowerShell 5.1 what we require (min) is still at 4.5. So the enum value is not available there.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 44.49%. Comparing base (dc9b260) to head (dad9556).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #6165   +/-   ##
=======================================
  Coverage   44.49%   44.49%           
=======================================
  Files         391      391           
  Lines       27034    27034           
=======================================
  Hits        12029    12029           
  Misses      14165    14165           
  Partials      840      840           

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