The subsystem of a metric must be it's plugin name. "dns" is reserved
for the core. Use a const convention to avoid copy-paste mistakes in
naming.
Fix dns64 and acl plugin.
Signed-off-by: Ben Kochie <superq@gmail.com>
For now metric is measure only for headless services. Informer has been slighlty
refactored, so the code can measure latency without storing extra fields on
Endpoint struct.
Signed-off-by: Janek Łukaszewicz <janluk@google.com>
Suggestions from code review
Co-Authored-By: Chris O'Haver <cohaver@infoblox.com>
