HIVE-28359: Discard old builds in Jenkins to avoid disk space exhaust…

…ion (Stamatis Zampetakis reviewed by Zoltan Haindrich)

Currently Jenkins retains the builds from all active branches/PRs leading to disk space exhaustion and CI failures requiring manual intervention to restore the services.

Close #5332

Jenkinsfile

@@ -16,7 +16,14 @@
  * limitations under the License.
  */
 
+def discardDaysToKeep = '365'
+def discardNumToKeep = '' // Unlimited
+if (env.BRANCH_NAME != 'master') {
+  discardDaysToKeep = '60'
+  discardNumToKeep = '5'
+}
 properties([
+    buildDiscarder(logRotator(daysToKeepStr: discardDaysToKeep, numToKeepStr: discardNumToKeep)),
     // max 5 build/branch/day
     rateLimitBuilds(throttle: [count: 5, durationName: 'day', userBoost: true]),
     // do not run multiple testruns on the same branch