keep 15 runs

alfa-client/apps/alfa-e2e/Jenkinsfile

@@ -28,7 +28,7 @@ pipeline {
     options {
         timeout(time: 2, unit: 'HOURS')
         disableConcurrentBuilds()
-        buildDiscarder(logRotator(numToKeepStr: '5'))
+        buildDiscarder(logRotator(numToKeepStr: '15'))
         skipDefaultCheckout(true)
     }
 

alfa-client/apps/alfa-e2e/Jenkinsfile-static

@@ -30,7 +30,7 @@ pipeline {
     options {
         timeout(time: 2, unit: 'HOURS')
         disableConcurrentBuilds()
-        buildDiscarder(logRotator(numToKeepStr: '10'))
+        buildDiscarder(logRotator(numToKeepStr: '15'))
         skipDefaultCheckout(true)
     }