feat: Adding public branch list job (#560)

* feat: Adding jenkinsfile to get list of branches

pipelines/release/Jenkinsfile.public.branch.list

+node {
+    try {
+        repositories = ['Sunbird-Ed/SunbirdEd-portal',
+                        'Sunbird-Ed/SunbirdEd-mobile',
+                        'Sunbird-Ed/SunbirdEd-portal',
+                        'Sunbird-Ed/SunbirdEd-mobile',
+                        'project-sunbird/sunbird-lms-jobs',
+                        'project-sunbird/sunbird-lms-service',
+                        'project-sunbird/sunbird-data-pipeline',
+                        'project-sunbird/sunbird-content-service',
+                        'project-sunbird/sunbird-auth',
+                        'project-sunbird/sunbird-learning-platform',
+                        'project-sunbird/sunbird-content-plugins',
+                        'project-sunbird/sunbird-lms-mw',
+                        'project-sunbird/sunbird-ml-workbench',
+                        'project-sunbird/sunbird-utils',
+                        'project-sunbird/sunbird-analytics',
+                        'project-sunbird/sunbird-telemetry-service',
+                        'project-sunbird/secor',
+                        'project-sunbird/sunbird-content-player',
+                        'project-sunbird/sunbird-content-editor',
+                        'project-sunbird/sunbird-content-plugins',
+                        'project-sunbird/sunbird-collection-editor',
+                        'project-sunbird/sunbird-generic-editor',
+                        'project-sunbird/sunbird-open-saber-bridge',
+                        'project-sunbird/sunbird-devops']
+
+        ansiColor('xterm') {
+            String ANSI_GREEN = "\u001B[32m"
+            String ANSI_NORMAL = "\u001B[0m"
+            String ANSI_BOLD = "\u001B[1m"
+            String ANSI_RED = "\u001B[31m"
+
+            if (params.size() == 0) {
+                repoList = "['" + repositories.join("','") + "']"
+                properties([[$class: 'RebuildSettings', autoRebuild: false, rebuildDisabled: false], parameters([[$class: 'CascadeChoiceParameter', choiceType: 'PT_CHECKBOX', description: '<font color=black size=2><b>Choose the repo to create tag</b></font>', name: '', filterLength: 1, filterable: false, name: 'repositories', randomName: 'choice-parameter-2927218175384999', referencedParameters: '', script: [$class: 'GroovyScript', fallbackScript: [classpath: [], sandbox: false, script: ''], script: [classpath: [], sandbox: false, script: """return $repoList """]]], [$class: 'DynamicReferenceParameter', choiceType: 'ET_FORMATTED_HTML', description: '<font color=black size=2><b>Choose the branch from which tag will be created</b></font>', name: 'release_branch', omitValueField: true, randomName: 'choice-parameter-2927218195310673', referencedParameters: '', script: [$class: 'GroovyScript', fallbackScript: [classpath: [], sandbox: false, script: ''], script: [classpath: [], sandbox: false, script: 'return """<input name="value" value="${public_repo_branch}" class="setting-input"  type="text">"""']]]]), [$class: 'ThrottleJobProperty', categories: [], limitOneJobWithMatchingParams: false, maxConcurrentPerNode: 0, maxConcurrentTotal: 0, paramsToUseForLimit: '', throttleEnabled: false, throttleOption: 'project']])
+                println(ANSI_BOLD + ANSI_GREEN + "First run of the job. Parameters created. Stopping the current build. Please trigger new build and provide parameters" + ANSI_NORMAL)
+                return
+            }
+
+            if (!params.release_branch.contains('release-') || params.release_branch == '') {
+                println(ANSI_BOLD + ANSI_RED + "Uh oh! Release branch is not in valid format. Please provide value as release-" + ANSI_NORMAL)
+                error 'Error: Release branch name format error'
+            }
+
+            if (params.repositories == '') {
+                print(ANSI_BOLD + ANSI_RED + "Uh oh! No repositories are selected!" + ANSI_NORMAL)
+                error 'No repositories selected'
+            }
+
+            stage('Get branches') {
+                cleanWs()
+                params.repositories.split(',').each { repo ->
+                    dir("$WORKSPACE") {
+                        repo_name = repo.split('/')[1]
+                        sh "git clone --depth 1 --no-single-branch https://github.com/$repo $repo_name"
+                        dir("$repo_name") {
+                            sh "echo $repo_name >> $WORKSPACE/branches.txt"
+                            sh "git branch -a | grep \"remotes/origin/${params.release_branch}\" | cut -d '/' -f3 >> $WORKSPACE/branches.txt"
+                            sh "echo \\\n-------------------------------------------\\\n >> $WORKSPACE/branches.txt"
+                        }
+                    }
+                }
+            }
+            archiveArtifacts 'branches.txt'
+        }
+    }
+
+    catch (err) {
+        throw err
+    }
+}