Graph Security: Add login_host for national cloud authentication endpoint

[mdazam1942]

No description provided.

[codecov]

Codecov Report

Attention: 1 lines in your changes are missing coverage. Please review.

Comparison is base (d55a40f) 86.19% compared to head (4a63d29) 86.19%.

Files	Patch %	Lines
...les/azure_sentinel/stix_transmission/api_client.py	0.00%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #1641      +/-   ##
===========================================
- Coverage    86.19%   86.19%   -0.01%     
===========================================
  Files          582      582              
  Lines        49783    49784       +1     
===========================================
  Hits         42911    42911              
- Misses        6872     6873       +1     

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