net: don't force cgo resolver for .local subdomain queries
The cgo resolver sends DNS queries for .local subdomain
lookups, just as we do in the go resolver.
We don't need to fallback to the cgo resolver for this
domains when nsswitch.conf uses only file and dns modules.
This has a benefit that we select a consistent resolver,
that is only based on the system configuration, regardless
of the queried domain.
Updates #63978
Change-Id: I9166103adb94d7ab52992925f413f361130e7c52
GitHub-Last-Rev:
e2bc5874cb5c9165e3cc058e9effe36d0ce68cd6
GitHub-Pull-Request: golang/go#63986
Reviewed-on: https://go-review.googlesource.com/c/go/+/540555
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Michael Pratt <mpratt@google.com>