[feat] allow cni updateStrategy to be configurable

[sstarcher]

• For users with large clusters rollout of the cni can take a bit of time. This will allow them to configure a faster rollout of the cni resources.

Fixes #13031

[alpeb]

Thanks @sstarcher! 👍

For the CLI-based method to work with your change, please add this to the Values struct in ./pkg/charts/cni/values.go:

	UpdateStrategy       map[string]interface{} `json:"updateStrategy"`

And then make sure you run go test ./... -update to update the test fixtures.

[sstarcher]

tried both of the following and they error out
go test ./... --update
go test ./... -update

I also did go test ./cli/cmd/... --update, but no changes

[alpeb]

But when it errors out, it does generate changes in the golden files, no? With those changes, go test ./... should pass.

[sstarcher]

running go test ./... -update does not change any files. The error I see is it saying -update is an invalid arg. I'm running this from the root of the repo.

FAIL github.com/linkerd/linkerd2/viz/tap/pkg 0.021s
flag provided but not defined: -update
Usage of /tmp/go-build3818748008/b1710/srv.test:
-test.bench regexp
run only benchmarks matching regexp
-test.benchmem
print memory allocations for benchmarks
-test.benchtime d
run each benchmark for duration d or N times if d is of the form Nx (default 1s)
-test.blockprofile file