[FIXED HUDSON-5271] in 1.342. Automatic tool installation wasn't honoring proxy setting.

git-svn-id: https://hudson.dev.java.net/svn/hudson/trunk/hudson/main@25811 71c3de6d-444a-0410-be80-ed276b4c234a

core/src/main/java/hudson/FilePath.java

@@ -529,7 +529,7 @@ public final class FilePath implements Serializable {
         try {
             URLConnection con;
             try {
-                con = archive.openConnection();
+                con = ProxyConfiguration.open(archive);
                 con.connect();
             } catch (IOException x) {
                 if (this.exists()) {