[Backport 2.x] Replace String concatenation with Log4j ParameterizedMessage for read…

[owaiskazi19]

Backport of #943

Description

[Describe what this change achieves]

Related Issues

Resolves #[Issue number to be closed when this PR is merged]

Check List

• New functionality includes testing.
• New functionality has been documented.
• API changes companion pull request created.
• Commits are signed per the DCO using --signoff.
• Public documentation issue/PR created.

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[codecov]

Codecov Report

Attention: Patch coverage is 42.77457% with 99 lines in your changes missing coverage. Please review.

Project coverage is 77.61%. Comparing base (eb58687) to head (2f73372).
Report is 4 commits behind head on 2.x.

Files with missing lines	Patch %	Lines
...framework/indices/FlowFrameworkIndicesHandler.java	38.09%	26 Missing ⚠️
...ework/transport/CreateWorkflowTransportAction.java	52.38%	10 Missing ⚠️
...rk/transport/ProvisionWorkflowTransportAction.java	18.18%	9 Missing ⚠️
.../transport/ReprovisionWorkflowTransportAction.java	30.76%	9 Missing ⚠️
...ch/flowframework/workflow/WorkflowStepFactory.java	0.00%	8 Missing ⚠️
...ramework/transport/GetWorkflowTransportAction.java	33.33%	4 Missing ⚠️
.../org/opensearch/flowframework/util/ParseUtils.java	0.00%	4 Missing ⚠️
...search/flowframework/workflow/UpdateIndexStep.java	33.33%	4 Missing ⚠️
...ework/workflow/AbstractRegisterLocalModelStep.java	50.00%	2 Missing and 1 partial ⚠️
...mework/workflow/AbstractRetryableWorkflowStep.java	50.00%	3 Missing ⚠️
... and 14 more

Additional details and impacted files

@@             Coverage Diff              @@
##                2.x    #1013      +/-   ##
============================================
- Coverage     78.08%   77.61%   -0.47%     
  Complexity      993      993              
============================================
  Files            99       99              
  Lines          4617     4714      +97     
  Branches        431      431              
============================================
+ Hits           3605     3659      +54     
- Misses          832      875      +43     
  Partials        180      180              

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