e2e: fixed gomega created from parent test context

[muraee]

What this PR does / why we need it:
currently the Main tests use a gomega var g created from the parent test contest t instead from the subtest.

On failure, this causes the error logs to be scrambled and the following error to show:

testing.go:1343: test executed panic(nil) or runtime.Goexit: subtest may have called FailNow on a parent test

Which issue(s) this PR fixes (optional, use fixes #<issue_number>(, fixes #<issue_number>, ...) format, where issue_number might be a GitHub issue, or a Jira story:
Fixes #

Checklist

• Subject and description added to both, commit and PR.
• Relevant issues have been referenced.
• This change includes docs.
• This change includes unit tests.

[openshift-ci]

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[muraee]

/test e2e-aws

[muraee]

/test e2e-aws

[muraee]

/test e2e-aws

[enxebre]

/approve

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: enxebre, muraee

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[csrwng]

/lgtm

[openshift-ci-robot]

/retest-required

Remaining retests: 0 against base HEAD d5d15ac and 2 for PR HEAD 922ef19 in total

[openshift-ci-robot]

/retest-required

Remaining retests: 0 against base HEAD 74718b2 and 1 for PR HEAD 922ef19 in total

[openshift-ci-robot]

/retest-required

Remaining retests: 0 against base HEAD 14745d9 and 0 for PR HEAD 922ef19 in total

[openshift-ci]

@muraee: all tests passed!

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