[Backport 2.8] fix security IT failure caused by weak password

[opensearch-trigger-bot]

Backport 0146dbd from #951

[codecov]

Codecov Report

Merging #952 (db5f23c) into 2.8 (b152ad3) will decrease coverage by 0.05%.
The diff coverage is 100.00%.

@@             Coverage Diff              @@
##                2.8     #952      +/-   ##
============================================
- Coverage     82.30%   82.26%   -0.05%     
+ Complexity     1913     1911       -2     
============================================
  Files           149      149              
  Lines          7494     7499       +5     
  Branches        744      744              
============================================
+ Hits           6168     6169       +1     
- Misses          985      988       +3     
- Partials        341      342       +1     

Flag	Coverage Δ
ml-commons	82.26% <100.00%> (-0.05%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
...n/model_group/TransportUpdateModelGroupAction.java	87.50% <100.00%> (+0.68%)	⬆️

... and 1 file with indirect coverage changes