make test does not work on MacOS

[porridge]

BSD sed (as shipped with MacOS) does not support + nor \+ in regular expressions.
However it does support \{1,\} which does the same thing and is also supported by GNU sed.

Moreover, bash 3.2 (as shipped with MacOS) does not seem to support source <(...), it seems to just do nothing.
Using plain eval seems to do the trick though.

Symptom of the former issue is:

source <(setup-envtest use -p env v0.22.1) && go test -race -covermode atomic -coverprofile cover.out ./...
version be a valid version, or simply 'latest' or 'latest-on-disk': unable to parse "v0.22.1" as a version stringshould be X.Y.Z, where Z may be '*','x', or left off entirely to denote a wildcard, optionally prefixed by ~|<|<=, and optionallyfollowed by ! (latest remote version)

And of the latter:

      unable to start control plane itself: failed to start the controlplane. retried 5 times: fork/exec /usr/local/kubebuilder/bin/etcd: no such file or directory

(even though the binaries are fetched by setup-envtest)

[porridge]

/assign