add nginxingresscontroller crd

[OliverMKing]

Description

Adds the nginx ingress controller crd

Type of change

Please delete options that are not relevant.

• [ ] Bug fix (non-breaking change which fixes an issue)
• [x] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
• [ ] This change requires a documentation update

How Has This Been Tested?

Unit tested. Nothing here changes the behavior of operator yet so no e2e tests yet.

Checklist:

• [x] My code follows the style guidelines of this project
• [x] I have performed a self-review of my code
• [x] I have commented my code, particularly in hard-to-understand areas
• [x] I have made corresponding changes to the documentation
• [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] Any dependent changes have been merged and published in downstream modules

[coveralls]

Pull Request Test Coverage Report for Build 6707619501

• 71 of 157 (45.22%) changed or added relevant lines in 2 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage decreased (-2.7%) to 86.25%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
api/v1alpha1/zz_generated.deepcopy.go	0	86	0.0%
<!--	Total:	71	157	45.22%	-->

Totals
Change from base Build 6671581685:	-2.7%
Covered Lines:	2139
Relevant Lines:	2480

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💛 - Coveralls

[OliverMKing]

/ok-to-test sha=4a68079