Add Build Timeout Plugin

Many freestyle jobs are using Build Timeout (build-timeout) Plugin.

Change-Id: I2ee6ddd043fee264ffc01e29c13c7a86c804a839
diff --git a/Dockerfile b/Dockerfile
index 4843979..3d24a3b 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -78,6 +78,7 @@
         artifactory \
         build-blocker-plugin \
         build-monitor-plugin \
+        build-timeout \
         build-user-vars-plugin \
         categorized-view \
         copyartifact \