Make t.Parallel() come first

[mattmoor]

Changes

/kind bug

This makes the t.Parallel() call come first in the timeout_test.go tests, where I recently added context.WithTimeout. When t.Parallel() is called, I believe it suspends the test and releases the blocking parent, and -parallel=N instances are allowed to proceed concurrently. I think that in this case, we set up a timeout and then ~immediately suspend our thread!
So when things resume, our context is immediately cancelled 😬

Here's what I'm seeing in my downstream testing (very intermittently):

--- FAIL: TestTaskRunTimeout (1.17s)
    init_test.go:132: Create namespace arendelle-cwq88 to deploy to
    init_test.go:148: Verify SA "default" is created in namespace "arendelle-cwq88"
    timeout_test.go:254: Creating Task and TaskRun in namespace arendelle-cwq88
    timeout_test.go:266: Failed to create Task `giraffe`: context deadline exceeded
    panic.go:636: ############################################
    panic.go:636: ### Dumping objects from arendelle-cwq88 ###
    panic.go:636: ############################################
    panic.go:636: 
    panic.go:636: #####################################################
    panic.go:636: ### Dumping logs from Pods in the arendelle-cwq88 ###
    panic.go:636: #####################################################
--- FAIL: TestStepTimeout (1.09s)
    init_test.go:132: Create namespace arendelle-lnzzk to deploy to
    init_test.go:148: Verify SA "default" is created in namespace "arendelle-lnzzk"
    timeout_test.go:182: Creating Task with Step step-no-timeout, Step step-timeout, and Step step-canceled in namespace arendelle-lnzzk
    timeout_test.go:186: Creating TaskRun run-timeout in namespace arendelle-lnzzk
    timeout_test.go:216: Failed to create TaskRun `run-timeout`: context deadline exceeded
    panic.go:636: ############################################
    panic.go:636: ### Dumping objects from arendelle-lnzzk ###
    panic.go:636: ############################################
    panic.go:636: 
    panic.go:636: #####################################################
    panic.go:636: ### Dumping logs from Pods in the arendelle-lnzzk ###
    panic.go:636: #####################################################

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[mattmoor]

cc @afrittoli @vdemeester @imjasonh

[imjasonh]

/lgtm

[vdemeester]

/lgtm

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[mattmoor]

different test

/retest

[mattmoor]

different test: TaskRunRetry...

/retest