Closes gh-14734

See gh-14732

This commit introduces a dedicated hook point for InfluxDB's http client
builder and retains backward compatibility, in a deprecated fashion, for
looking up a OkHttpClient.Builder bean.

Closes gh-14709

See gh-14733

See gh-14731

See gh-14730

See gh-14729

See gh-14732

See gh-14728

See gh-14727

* pr/14712:
  Fix actuator endpoint tables in docs

Closes gh-14712

See gh-14722

See gh-14721

* gh-14720:
  Fix @Cacheable typo

Closes gh-14720

Closes gh-13945

Closes gh-2958

Closes gh-13895

Closes gh-14250

Closes gh-14714

Closes gh-14713

* pr/14707:
  Remove unused fields in tests

Closes gh-14707