Add apply kubeyaml rpc to KNE grpc server

[alexmasi]

Now kubeyaml can be applied to a cluster through the controller server

[github-actions]

Pull Request Test Coverage Report for Build 7053230440

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A quick fix for this PR: rebase it; your next report should be accurate.

• 33 of 50 (66.0%) changed or added relevant lines in 4 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage decreased (-0.05%) to 65.621%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
exec/exec.go	0	1	0.0%
exec/fake/fake.go	0	1	0.0%
deploy/deploy.go	33	39	84.62%
controller/server/main.go	0	9	0.0%

Totals
Change from base Build 7023015514:	-0.05%
Covered Lines:	4079
Relevant Lines:	6216

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💛 - Coveralls

[alexmasi]

Adding the unit tests in a follow up commit to this PR

I intended to include them originally, wanted to make sure we were on the same page with the functionality and impl before writing them (I should have mentioned that in the description, sorry)

[bormanp]

nice reduction in duplicated code!