Consider metrics instrumentation

[edysli]

I'm a Shibboleth IdP user and I'd like to get more information about the number of open LDAP connections it uses, pool size and usage, query timings, etc. I think it would be easier to get this information, for developer using ldaptive, if it were instrumented for metrics, for example with Micrometer. This implies adding code in interesting places to increment counters, report values (gauges), time requests, etc.

[dfish3r]

Great suggestion. I'll look at a metrics framework for v2.