Fix: groovy linter warnings

[zdtsw]

To fix all the linter Warnings and preferable Info from GH action super-linter Goal: without any codenarc rule excluded , we should keep

┌─────────┬───────────┬─────────────┐
│ (index) │ Severity  │ Total found │
├─────────┼───────────┼─────────────┤
│    0    │  'Error'  │      0      │
│    1    │ 'Warning' │      0      │
│    2    │  'Info'   │      0      │
└─────────┴───────────┴─────────────┘

example run: https://github.com/adoptium/ci-jenkins-pipelines/actions/runs/3177396948/jobs/5177786644

Related: https://github.com/adoptium/ci-jenkins-pipelines/pull/427 and https://github.com/adoptium/ci-jenkins-pipelines/issues/425

[zdtsw]

Below are the warnings that cannot be auto-fixed: we might need to have a discussion to see if exclude or fix them:

• LineLength easy but a lot
• ExplicitCallToEqualsMethod easy
• NestedBlockDepth difficult: we have several in the depth of 11 and 12
• ThrowExceptionFromFinallyBlock difficult and need review
• PrivateFieldCouldBeFinal need review each
• ReturnNullFromCatchBlock difficult and need review each
• DuplicateMapLiteral unsure
• ExplicitCallToGetAtMethod need review each
• Instanceof easy
• ParameterCount difficult
• ParameterName need review each to fix
• FieldName need review to fix
• SerializableClassMustDefineSerialVersionUID difficult
• BuilderMethodWithSideEffects need review each to fix
• ExplicitCallToGetAtMethod easy
• ExplicitCallToMinusMethod easy
• ExplicitHashMapInstantiation easy
• FactoryMethodName need review each to fix