Relax root overlap requirements for buf protoc #351
Description
See cockroachdb/cockroach#66913 (comment)
$ protoc -o /dev/null -I proto -I . $(buf ls-files proto)
buf/alpha/registry/v1alpha1/resolve.proto:20:1: warning: Import buf/alpha/registry/v1alpha1/module.proto is unused.
$ buf protoc -o /dev/null -I proto -I . $(buf ls-files proto)
include directory "/home/foo/dev/buf/proto" is within include directory "/home/foo/dev/buf" which is not allowed