Allow to override skip check for pom packaging

[DiverOfDark]

Fix for issue #114

[codecov]

Codecov Report

Merging #115 (bdec45c) into master (607c016) will decrease coverage by 0.15%.
The diff coverage is 50.00%.

@@             Coverage Diff              @@
##             master     #115      +/-   ##
============================================
- Coverage     78.36%   78.21%   -0.16%     
  Complexity      188      188              
============================================
  Files            27       27              
  Lines           661      661              
  Branches         77       77              
============================================
- Hits            518      517       -1     
  Misses          112      112              
- Partials         31       32       +1     

Impacted Files	Coverage Δ	Complexity Δ
...n/plugins/checksum/mojo/DependenciesCheckMojo.java	78.31% <50.00%> (-1.21%)	23.00 <0.00> (ø)

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[nicoulaj]

Thanks!