bearer middleware need add whitelist field to bypass verifying some specific url like healthz

## issue description

if enable bearer http middleware, the consul name resolution cannot check the service healthz successfully

## feature request

If enable bearer http middleware, if using consul name resolution config, it will verify consul healthz http request too.
As access token may be changed from time to time, it is not easy to configure consul to carry a fixed access token,
in this scenario, it had better add 'whitelist' filed in bearer middleware component config, and adjust code to bypass verifying process when get the url in whitelist.