enh(ci): Fix reference build used for issue recording (#10207)

* use maintenance branch as ref branch for issue recording

* remove the discoverReferenceBuild function

Jenkinsfile

@@ -7,7 +7,7 @@ import org.jenkinsci.plugins.pipeline.modeldefinition.Utils
 def serie = '21.04'
 def maintenanceBranch = "${serie}.x"
 def qaBranch = "dev-${serie}.x"
-env.REF_BRANCH = 'master'
+env.REF_BRANCH = "${maintenanceBranch}"
 env.PROJECT='centreon-web'
 if (env.BRANCH_NAME.startsWith('release-')) {
   env.BUILD = 'RELEASE'
@@ -114,20 +114,22 @@ try {
           ])
         }
 
-        discoverGitReferenceBuild()
         recordIssues(
+          referenceJobName: "centreon-web/${env.REF_BRANCH}",
           enabledForFailure: true,
           qualityGates: [[threshold: 1, type: 'DELTA', unstable: false]],
           tool: phpCodeSniffer(id: 'phpcs', name: 'phpcs', pattern: 'codestyle-be.xml'),
           trendChartType: 'NONE'
         )
         recordIssues(
+          referenceJobName: "centreon-web/${env.REF_BRANCH}",
           enabledForFailure: true,
           qualityGates: [[threshold: 1, type: 'DELTA', unstable: false]],
           tool: phpStan(id: 'phpstan', name: 'phpstan', pattern: 'phpstan.xml'),
           trendChartType: 'NONE'
         )
         recordIssues(
+          referenceJobName: "centreon-web/${env.REF_BRANCH}",
           enabledForFailure: true,
           failOnError: true,
           qualityGates: [[threshold: 1, type: 'NEW', unstable: false]],