Add possibility of using this library with others where kubeconfig flag is also defined

[filintod]

Describe the feature

There are cases where one would like to use this library in addition to something like controller-runtime. As both libraries use the same flag in init stmts they collide and the first one wins. Controller-runtime already provide a way to avoid this issue but this library does not.

Release Note

RELEASE NOTE:

[ItalyPaleAle]

one would like to use this library in addition to something like controller-runtime.

What do you mean with "this library"? Which part of the repo?

Although I am ok with accepting changes that enable importing some package from components-contrib in 3rd-party repos, please also note that these packages do not have stable APIs, and we do not officially support importing them into 3rd-party projects.