admin: lower log level to Debug for /metrics requests (#3749)
admin: lower log level to Debug for /metrics requests (#3749)

* admin: lower log level to Debug for /metrics requests

Signed-off-by: Dave Henderson <43109f09330ba64e33d78babb963403790c3ac10@gmail.com>

* Apply suggestions from code review

Co-authored-by: Matt Holt <6e15340bc34d98c823445cca0475cc9127379d4b@users.noreply.github.com>

Co-authored-by: Matt Holt <6e15340bc34d98c823445cca0475cc9127379d4b@users.noreply.github.com>
mholt/caddy,l3dlp/caddy,l3dlp/caddy,abiosoft/caddy,abiosoft/caddy,l3dlp/caddy,mholt/caddy