Increased test timeout to 60 minutes / keep 10 builds

Change-Id: I06adcc3d165756284bd815cfa76aeafd4dbd87a5
Reviewed-on: https://git.eclipse.org/r/c/platform/eclipse.platform.resources/+/192187
Tested-by: Platform Bot <platform-bot@eclipse.org>
Reviewed-by: Andrey Loskutov <loskutov@gmx.de>

Jenkinsfile

diff --git a/Jenkinsfile b/Jenkinsfile
index c3259fa..df60521 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -1,7 +1,7 @@
 pipeline {
 	options {
-		timeout(time: 40, unit: 'MINUTES')
-		buildDiscarder(logRotator(numToKeepStr:'5'))
+		timeout(time: 60, unit: 'MINUTES')
+		buildDiscarder(logRotator(numToKeepStr:'10'))
 	}
 	agent {
 		label "centos-latest"