fix check to value of max ocp version

[camilamacedo86]

By doing the work in the community operator we could check that when the property is set by the user with:

"olm.properties": '[{"type": "olm.maxOpenShiftVersion", "value": "4.8"}]'

Opm will add the value with the double cotes. That also needs to be solved in the validator.

IMPORTANT: it was not identified before because in the @gallettilance scripts we are inserting it directly and without the double coutes. However, that is not how opm will set the value when it is provided by the user.

[coveralls]

Pull Request Test Coverage Report for Build 1033429661

• 0 of 1 (0.0%) changed or added relevant line in 1 file are covered.
• 2 unchanged lines in 1 file lost coverage.
• Overall coverage increased (+0.0008%) to 0.85%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
pkg/removed_apis.go	0	1	0.0%

Files with Coverage Reduction	New Missed Lines	%
pkg/removed_apis.go	2	0%

Totals
Change from base Build 1027367761:	0.0008%
Covered Lines:	18
Relevant Lines:	2117

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💛 - Coveralls

[camilamacedo86]

I am forcing this merge because the error faced in the CI here has no relation with the changes and I'd like to ask a help from team members