Getting ready for jenkins 2.0

[BogdanLivadariu]

Major changes:

• start building against jenkins plugin 2+
• support pipeline usage

node {  
   stage 'generate tests'
   step([$class: 'TestNGTestReportPublisher',
        reportsDirectory: './',
        fileIncludePattern: '',
        fileExcludePattern: '',
        markAsUnstable: false,
        copyHTMLInWorkspace: true        
    ])
}

• use same version in all packages, plan to use mvn release plugin to prepare & release maven artifacts are not usable #69
• fixed problems in testNG reports for Comply with the new Jenkins Security Settings #12

[codecov-io]

Current coverage is 68.72% (diff: 100%)

Merging #71 into master will increase coverage by 0.15%

@@             master        #71   diff @@
==========================================
  Files            26         26          
  Lines           633        633          
  Methods           0          0          
  Messages          0          0          
  Branches         89         89          
==========================================
+ Hits            434        435     +1   
+ Misses          167        166     -1   
  Partials         32         32          

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