[PHPUnitTask] Added missing halton* methods.

[siad007]

Added missing

• haltondefect
• haltonwarning
• haltonrisky

Should be used by some phpunit formatters.

[codecov]

Codecov Report

Merging #1433 (4d1d998) into master (e5b487f) will decrease coverage by 0.03%.
The diff coverage is 0.00%.

@@             Coverage Diff              @@
##             master    #1433      +/-   ##
============================================
- Coverage     54.27%   54.24%   -0.04%     
- Complexity     9119     9125       +6     
============================================
  Files           467      467              
  Lines         22153    22168      +15     
============================================
  Hits          12024    12024              
- Misses        10129    10144      +15     

Impacted Files	Coverage Δ	Complexity Δ
classes/phing/tasks/ext/phpunit/PHPUnitTask.php	41.04% <0.00%> (-2.88%)	92.00 <6.00> (+6.00)	⬇️

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