[Build] Deploy RelEng scripts in master branch build

This ensures that releng scripts are always updated on the
download-server as soon as they change in the git repository.
Furthermore this avoids the need for the separate Jenkins job to deploy
the scripts.

Jenkinsfile

@@ -18,7 +18,7 @@ pipeline {
 				sh 'git submodule foreach "git fetch origin master; git checkout FETCH_HEAD"'
 			}
 		}
-		stage('Deploy eclipse-platform-parent pom and eclipse-sdk target') {
+		stage('Deploy parent-pom and SDK-target') {
 			when {
 				anyOf {
 					branch 'master'
@@ -31,6 +31,45 @@ pipeline {
 				sh 'mvn clean deploy -f eclipse.platform.releng.prereqs.sdk/pom.xml'
 			}
 		}
+		stage('Deploy RelEng scripts') {
+			when {
+				branch 'master'
+			}
+			steps {
+				sshagent(['projects-storage.eclipse.org-bot-ssh']) {
+					sh '''
+						serverBase='/home/data/httpd/download.eclipse.org/eclipse/'
+						serverStaging="${serverBase}/relengScripts-staging"
+						
+						ssh [email protected] rm -rf ${serverStaging}
+						ssh [email protected] mkdir -p ${serverStaging}
+						
+						scp -r production [email protected]:${serverStaging}
+						scp -r scripts [email protected]:${serverStaging}
+						scp -r cje-production [email protected]:${serverStaging}
+						
+						pushd eclipse.platform.releng.tychoeclipsebuilder/eclipse
+						scp -r buildScripts [email protected]:${serverStaging}
+						popd
+						
+						pushd eclipse.platform.releng.tychoeclipsebuilder
+						scp -r entitlement [email protected]:${serverStaging}
+						popd
+						
+						#To minimize 'downtime', all files are first transfered to a staging folder on the server, 
+						# then the existing folder is moved to 'disposal' and the 'staging' to the desired target.
+						# Eventually the previously existing content is deleted with the 'disposal'-folder.
+						serverTarget="${serverBase}/relengScripts"
+						serverDisposal="${serverBase}/relengScripts-disposal"
+						
+						ssh [email protected] "\
+							mv -f ${serverTarget} ${serverDisposal} ;\
+							mv -f ${serverStaging} ${serverTarget} &&\
+							rm -rf ${serverDisposal}"
+					'''
+				}
+			}
+		}
 		stage('Build') {
 		    when { not { branch pattern: "prepare_R.*", comparator: "REGEXP" } }
 			steps {