Redirect all the plugins for stable-3.11 to the archive-ci

The Gerrit v3.11 version is now EOL and all the plugins
built since now are moved into the archive-ci server so
that can be still downloaded in the future.

Change-Id: I5e6e2112e8fd36412ea71d0ba678c85ff04e412b

jenkins-docker/server/haproxy/haproxy.cfg

diff --git a/jenkins-docker/server/haproxy/haproxy.cfg b/jenkins-docker/server/haproxy/haproxy.cfg
index bb26560..54b6d25 100644
--- a/jenkins-docker/server/haproxy/haproxy.cfg
+++ b/jenkins-docker/server/haproxy/haproxy.cfg
@@ -19,7 +19,7 @@
     log-format "${HAPROXY_HTTP_LOG_FMT} auth_response_code:%{+Q}[var(txn.auth_response_code)] auth_response_successful:%{+Q}[var(txn.auth_response_successful)]"
 
     # Redirect transparently to the archive-ci for Gerrit EOL releases
-    acl is_eol_gerrit path_reg .*-stable-(2\.*|3\.[0-9]|3\.10)/.*
+    acl is_eol_gerrit path_reg .*-stable-(2\.*|3\.[0-9]|3\.1[0-1])/.*
     redirect prefix https://archive-ci.gerritforge.com if is_eol_gerrit
 
     acl is_artifact_download path_reg -i /artifact/.*(json|jar|war|version)$