install/kubernetes: Tidy up lint target
install/kubernetes: Tidy up lint target

Split up the variables used here for better readability, and add the V=0
quiet line to indicate progress in the way the other targets do.

Signed-off-by: Joe Stringer <16a9a54ddf4259952e3c118c763138e83693d7fd@cilium.io>

cilium/cilium,michi-covalent/cilium,cilium/cilium,cilium/cilium,cilium/cilium,michi-covalent/cilium,michi-covalent/cilium,michi-covalent/cilium,michi-covalent/cilium,cilium/cilium