Added separate jenkinsfile for coverage

jenkins/Jenkinsfile.coverage

@@ -0,0 +1,47 @@
+pipeline {
+  agent { label 'maven' }
+
+  options {
+    timeout(time: 1, unit: 'HOURS')
+    buildDiscarder(logRotator(numToKeepStr: '5')) 
+  }
+
+  stages {
+    stage('checkout') {
+      steps {
+        git(url: 'https://github.com/indigo-iam/iam.git', branch: env.BRANCH_NAME)
+        stash name: 'code', useDefaultExcludes: false
+      }
+    }
+
+    stage('coverage') {
+      steps {
+        unstash 'code'
+        sh 'mvn -B clean cobertura:cobertura'
+
+        publishHTML(target: [
+          reportName           : 'Cobertura Report',
+          reportDir            : 'iam-login-service/target/site/cobertura/',
+          reportFiles          : 'index.html',
+          keepAll              : true,
+          alwaysLinkToLastBuild: true,
+          allowMissing         : false
+        ])
+      }
+    }
+  }
+
+  post {
+    success {
+      slackSend channel: "#iam", color: 'good', message: "${env.JOB_NAME} - #${env.BUILD_NUMBER} Success (<${env.BUILD_URL}|Open>)" 
+    }
+
+    unstable {
+      slackSend channel: "#iam", color: 'danger', message: "${env.JOB_NAME} - #${env.BUILD_NUMBER} Unstable (<${env.BUILD_URL}|Open>)" 
+    }
+
+    failure {
+      slackSend channel: "#iam", color: 'danger', message: "${env.JOB_NAME} - #${env.BUILD_NUMBER} Failure (<${env.BUILD_URL}|Open>)" 
+    }
+  }
+}