* spotless upgrade and fixes for JMS1 tests
* includes missed bugs in KotlinCoroutineTests
* create spotBugs XML reports on CI, HTML locally
* use updatedCodeNarc rules with lowercase tolerance
* remove if and move bool to each property
* allow spotBugs gradle plugin to upgrade the spotbugs tool
* revert to original test
* exclude all kotlin source from spotbugs
* remove default location for spotBugs report
* do not pass null to a Span's attribute
* Integrate SpotBugs (FindBugs) into build. Set ignoreFailures so spotted bugs do not break the build.
* Fix many SpotBugs-found items, mostly making things final, but also a redundant null check and a reliance on platform character encoding. 2 items remain which will need further work/review, but as ignoreFailures is set, they will not fail the check stage.
Co-authored-by: Trask Stalnaker <trask.stalnaker@gmail.com>
Trask Stalnaker
Ioannis Mavroukakis
John Bley