Jenkins Shared Library to be used in pipeline

##Below functions defined for generic use :

repoClone

Method to clone repo with specific branch in current directory

mavenBuild

Generic step to perform maven build and execute unit tests and publish test report Maven arguments can be passed by caller

sonarScan

Method to perform static code analysis of code using maven plugin

checkmarxScan

Generic step for performing checkmarx security analysis

nexusIQScan

Generic step to run nexus IQ scan for open source scanning

nexusUpload

Generic method to perform nexus upoad of the artifact built during maven build