Avoid double negative assertions

[nunnatsa]

Description

Patterns like Expect(boolVal).ShouldNot(Equal(false)) or Expect(boolVal).ShouldNot(BeFalse()), the linter will suggest Expect(boolVal).Should(BeTrue())

Type of change

• New feature (non-breaking change which adds functionality)

How Has This Been Tested?

• Added test case and related test data
• Update the functional test

Checklist:

• I have performed a self-review of my own code
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• I ran golangci-lint

[coveralls]

Pull Request Test Coverage Report for Build 4468264479

• 22 of 22 (100.0%) changed or added relevant lines in 2 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.5%) to 82.981%

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Totals
Change from base Build 4468004751:	0.5%
Covered Lines:	668
Relevant Lines:	805

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💛 - Coveralls