Closes gh-15658

Closes gh-15685

Closes gh-15683

Closes gh-15682

Closes gh-15681

Closes gh-15680

Closes gh-15657

Closes gh-15418

Closes gh-15415

Closes gh-15411

Closes gh-15530

Closes gh-15416

Closes gh-15412

Closes gh-15406

Closes gh-15676

Closes gh-15408

Closes gh-15409

Closes gh-15671

Closes gh-15669

Closes gh-15667

Closes gh-15668

Closes gh-15528

Closes gh-15529

This commit aligns the Spring WebFlux instrumentation on Spring MVC
since gh-12447.
From now on, if the best matching path pattern is not found,
the recorded uri tag will be "UNKNOWN".

Note that for WebFlux.fn, the pattern information is properly
recorded as of SPR-17395.

Closes gh-15609

This commit ensures that the compression options are also applied on the
`Http2Protocol` when http/2 is enabled with Tomcat.

Closes gh-15591

Closes gh-15639

Closes gh-15612

Closes gh-15611

Closes gh-15578

* pr/15583:
  Polish "Add unit test for cassandra health checker"
  Add unit test for cassandra health checker

Closes gh-15583