Add a coberturaReportAdapter symbol to disambiguate from Cobertura plugin's symbols

[medianick]

Allows for this report adapter to be disambiguated from the one provided by the Cobertura plugin in the case both plugins are installed; see https://stackoverflow.com/a/72839475/466874 for this specific case and https://issues.jenkins.io/browse/INFRA-2012 and jenkins-infra/helpdesk#1662 for the fundamental issue.

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[codecov]

Codecov Report

Merging #417 (a73506f) into master (79b751f) will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##             master     #417   +/-   ##
=========================================
  Coverage     72.08%   72.08%           
  Complexity      984      984           
=========================================
  Files            86       86           
  Lines          3694     3694           
  Branches        431      431           
=========================================
  Hits           2663     2663           
  Misses          885      885           
  Partials        146      146           

Impacted Files	Coverage Δ
...ugins/coverage/adapter/CoberturaReportAdapter.java	58.82% <ø> (ø)

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[uhafner]

Thanks for fixing that. I totally forgot that the old cobertura plugin still is used.

[medianick]

Thanks for fixing that. I totally forgot that the old cobertura plugin still is used.

Thanks for merging it! This will give us a smoother path toward removing the Cobertura plugin since we'll be able to switch to the new coberturaReportAdapter adapter symbol for our existing jobs first, then remove the plugin, then (if desired) switch to the cobertura adapter symbol without conflict/error.