Decommission of static analyzers

[php-coder]

• CheckStyle
  • remove CheckStyle: ignore and @SuppressWarnings("checkstyle:*") comments
  • CheckStyle: how to ignore warnings #260
  • CheckStyle: update to 10.x and plugin to 3.2.0 #1015
• PMD
  • remove @SuppressWarnings("PMD.*") comments
  • pmd: enable checking for test sources #195
  • PMD: how to ignore warnings #261
  • maven-pmd-plugin: stop using deprecated rules #1018
  • Update pmd to 6.55.0 and maven-pmd-plugin to 3.19.0 #1250
  • Update pmd to 7.x #1646
• sortpom
  • Update sortpom-maven-plugin to 3.2.0 #1174
• boolint
  • Document bootlint #316
• rflint
  • Detect trailing spaces in *.robot files #1104 need to decide what to do
• shellcheck
  • remove shellcheck disable comments
  • Shellcheck: enable some of the optional checks #1615
  • Document shellcheck #710
• html5validator
  • Document html5validator #541
  • Check src/main/config/nginx/503.*html by html5validator #760
• ansible-lint
  • Document ansible-lint #1144
  • Update ansible-lint to 5.x #1515
  • Update ansible-lint to 6.x #1570
• CodeNarc
  • remove @SuppressWarnings from Groovy code
  • Generated CodeNarc report has unexpanded project version #508
  • Codenarc: find a way of providing codenarc.properties #539
  • codenarc fails on Windows with AssertionError: Invalid argument format: [Stamps] #994
  • Update CodeNarc to 1.6.1 #1187
• SpotBugs
  • SpotBugs: use find-sec-bugs plugin #480
  • Update spotbugs-maven-plugin to 4.7.2.0 #1190
  • Find a better way to deal with SpotBugs warnings in DAO classes #1198
  • Update SpotBugs to 4.8.3 #1258
  • FindBugs: use additional plugins for slf4j checking #184
  • FindBugs: use additional plugins #185
• ErrorProne
  • Document ErrorProne tool #999
  • Find a way to make ErrorProne work in IntelliJ IDEA #1069
  • ErrorProne: activate experimental checks #1235
  • Update error-prone to 2.24.0 #1440
  • will help to resolve Make the project at least compilable on newer JDKs #1350
• update decisions log: mention removal of error-prone and added workaround (see bb4afed)
• no need to add other static analyzers
  • Add checking by duplicate-finder-maven-plugin #183
  • Build scripts: add syntax checking for Ansible playbooks #422 looks useful, let's keep it
  • Add checking by CPD #585
  • Check Dockerfile by dockerfile_lint #613
  • Check nginx configuration by gixy #614
  • Add checking by dependency-check-maven #799
  • Ensure that commits messages conform the convention #1062 looks useful, let's keep it
  • Integrate csslint #1201
  • Integrate eslint #1202
  • Integrate nohttp #1203
  • CI: validate and check Terraform configuration #1212 looks useful, let's keep it
  • Use yaspeller for checking md and robot files #1109 looks useful, let's keep it
• Move docs from wiki to a repository #574 will have a lesser scope

maven-enforcer-plugin, probably, can stay altogether with maven-license-plugin.