Update make manifests to update deploy/base/

[NissesSenap]

Fixes #960

[NissesSenap]

Sigh, don't know where I should generate this. Don't like to add kustomize installation to a bunch of places for no good reason....
Will see if I can move some things around to make it better.

[NissesSenap]

@weisdd do you have any good ideas on this.
Currently the PR fails due to i need to add kustomize everywhere.
Of course, I can do that but I will increase build time for no good reason.

But if we don't do this during make manifests there is a big risk of missing updating the kustomization files during on PRs.

bash: line 1: /home/runner/work/grafana-operator/grafana-operator/bin/kustomize: No such file or directory
make: *** [Makefile:59: manifests] Error 127
Error: Process completed with exit code 2.

What do you think is the best way forward?
Or should we come up with some other solution all together?