emacs: Multi-host configuration.

Now users can pull recent changes and comments from multiple Gerrit
hosts.

BUG=chromium:111177
TEST=Tested with changes from internal and external Gerrit hosts.

Change-Id: I0783ae1d0b7c82e739bd7921d322216fee000b78
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/dev-util/+/2331866
Tested-by: Aaron Massey <aaronmassey@chromium.org>
Commit-Queue: Aaron Massey <aaronmassey@chromium.org>
Reviewed-by: Jack Rosenthal <jrosenth@chromium.org>
1 file changed