use BeforeEach() to assign variable vWhen

use BeforeEach() to assign variable vContext

ginkgo-linter: use Equal with different types: Comparing uint64 with int; either change the expected value type if possible, or use the BeEquivalentTo() matcher, instead of Equal()

ginkgo-linter: multiple issues: timeout defined more than once; polling defined more than once

ginkgo-linter: multiple issues: only use time.Duration for timeout and polling in Eventually() or Consistently(); only use time.Duration for timeout and polling in Eventually() or Consistently(). Consider using `Consistently(func() bool { return true }, time.Second*10, time.Second).Should(BeTrue())` instead

ginkgo-linter: timeout must not be shorter than the polling interval

ginkgo-linter: Success matcher only support a single error value, or function with Gomega as its first parameter

ginkgo-linter: wrong error assertion. Consider using `Eventually(func() error { return err }).Should(Succeed())` instead

ginkgo-linter: Success matcher does not support multiple values

ginkgo-linter: Success matcher only support a single error value, or function with Gomega as its first parameter

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