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

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

How Has This Been Tested?

• [x] Added test case and related test data
• [x] Update the functional test

Checklist:

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

---

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

---

💛 - Coveralls