chore(build): fix rsync issues (#554)

Fixes #553

Signed-off-by: Jeff MAURY <jmaury@redhat.com>

Jenkinsfile

@@ -27,7 +27,7 @@ node('rhel7'){
 		if(params.UPLOAD_LOCATION) {
 			stage('Upload') {
 				def filesToPush = findFiles(glob: '**/*.zip')
-				sh "rsync -Pzrlt --rsh=ssh --protocol=28 ${filesToPush[0].path} ${UPLOAD_LOCATION}/snapshots/intellij-tekton/"
+				sh "sftp -C ${UPLOAD_LOCATION}/snapshots/intellij-tekton/ <<< \$`put -p ${filesToPush[0].path}`"
 				stash name:'zip', includes:filesToPush[0].path
 			}
 		}
@@ -49,7 +49,7 @@ node('rhel7'){
 				if (!isSnapshot) {
 					stage("Promote the build to stable") {
 						def zip = findFiles(glob: '**/*.zip')
-						sh "rsync -Pzrlt --rsh=ssh --protocol=28 ${zip[0].path} ${UPLOAD_LOCATION}/stable/intellij-tekton/"
+						sh "sftp -C ${UPLOAD_LOCATION}/snapshots/intellij-tekton/ <<< \$`put -p ${zip[0].path}`"
 						currentBuild.keepLog = true
 						currentBuild.description = "${version}"
 					}