Correct the PR title and commit message

Author: aaradhak

jobs/bootimagebump.Jenkinsfile

@@ -99,26 +99,25 @@ node {
             // Commit the updated metadata.
             stage('Create Pull Request') {
                 //if (shwrap("git -C installer diff --exit-code") != 0){
-                    echo "enter PR stage"
-                    def message = "${params.BOOTIMAGE_BUG_ID}: Update RHCOS-${RELEASE_BRANCH} to ${params.BUILD_VERSION}"
-                    def commit_message = """\
-${params.BOOTIMAGE_BUG_ID}: Bump RHCOS ${RELEASE_BRANCH} bootimage metadata to ${params.BUILD_VERSION}
+                    pr_title = "${params.BOOTIMAGE_BUG_ID}: Update RHCOS-${RELEASE_BRANCH} bootimage metadata to ${params.BUILD_VERSION}"
+                    commit_message = """\
+Update RHCOS ${RELEASE_BRANCH} bootimage metadata to ${params.BUILD_VERSION}
 
 The changes done here will update the RHCOS ${RELEASE_BRANCH} bootimage metadata and address the following issues:
 ${params.JIRA_ISSUES}
 
 This change was generated using:
 
+```
 plume cosa2stream --target ${RHCOS_METADATA_FILE}                     \\
     --distro ${params.DISTRO} --no-signatures --name ${params.STREAM} \\
     --url ${params.URL}                                               \\
     x86_64=${params.BUILD_VERSION}                                    \\
     aarch64=${params.BUILD_VERSION}                                   \\
     s390x=${params.BUILD_VERSION}                                     \\
     ppc64le=${params.BUILD_VERSION}
-
+```
                         """.stripIndent().trim()
-                    echo "enter commit stage"
                     shwrap ("""
                             cd installer
                             git add ${RHCOS_METADATA_FILE}
@@ -131,7 +130,7 @@ plume cosa2stream --target ${RHCOS_METADATA_FILE}                     \\
                         shwrap("""
                                 cd installer
                                 git push -f https://\${GHUSER}:\${GHTOKEN}@github.com/${releng_installer} ${PR_BRANCH}
-                                curl -H "Authorization: token ${GHTOKEN}" -X POST -d '{ "title": "${message}", "head": "coreosbot-releng:${PR_BRANCH}", "base": "${RELEASE_BRANCH}" }' https://api.github.com/repos/openshift/installer/pulls --fail
+                                curl -H "Authorization: token ${GHTOKEN}" -X POST -d '{ "title": "${pr_title}", "head": "coreosbot-releng:${PR_BRANCH}", "base": "${RELEASE_BRANCH}" }' https://api.github.com/repos/openshift/installer/pulls --fail
                         """)
                     }
                 //}