Updated Config changes for GCP Chronicle for develop branch

[SharmilaMS-Hcl]

1. Updated Config and lang_en json files with private key(type as password) and email (type as text) under auth section.
2. Updated Api client, unit test case for transmit and read me files.

[codecov]

Codecov Report

Patch coverage: 100.00% and project coverage change: -0.18 ⚠️

Comparison is base (05e7dd7) 85.44% compared to head (3e8d529) 85.27%.

❗ Current head 3e8d529 differs from pull request most recent head cb552ba. Consider uploading reports for the commit cb552ba to get more accurate results

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #1476      +/-   ##
===========================================
- Coverage    85.44%   85.27%   -0.18%     
===========================================
  Files          618      602      -16     
  Lines        46888    45606    -1282     
===========================================
- Hits         40064    38891    -1173     
+ Misses        6824     6715     -109     

Impacted Files	Coverage Δ
...icle/tests/stix_transmission/test_gcp_chronicle.py	100.00% <ø> (ø)
...ules/gcp_chronicle/stix_transmission/api_client.py	92.79% <100.00%> (ø)

... and 21 files with indirect coverage changes

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