Fix frontend test runner on Java 9

frontend/test/__runner__/backend.js

@@ -44,13 +44,15 @@ export const BackendResource = createSharedResource("BackendResource", {
             if (server.dbKey !== server.dbFile) {
                 await fs.copy(`${server.dbKey}.h2.db`, `${server.dbFile}.h2.db`);
             }
-            server.process = spawn("java", ["-Dh2.bindAddress=localhost",           // fix H2 randomly not working (?)
+            server.process = spawn("java", ["-XX:+IgnoreUnrecognizedVMOptions",     // ignore options not recognized by this Java version (e.g. Java 7/8 should ignore Java 9 options)
+                                            "-Dh2.bindAddress=localhost",           // fix H2 randomly not working (?)
                                             "-Xmx2g",                               // Hard limit of 2GB size for the heap since Circle is dumb and the JVM tends to go over the limit otherwise
                                             "-XX:MaxPermSize=256m",                 // (Java 7) Give JVM a little more headroom in the PermGen space. Cloure makes lots of one-off classes!
                                             "-Xverify:none",                        // Skip bytecode verification for the JAR so it launches faster
                                             "-XX:+CMSClassUnloadingEnabled",        // (Java 7) Allow GC to collect classes. Clojure makes lots of one-off dynamic classes
                                             "-XX:+UseConcMarkSweepGC",              // (Java 7) Use Concurrent Mark & Sweep GC which allows classes to be GC'ed
                                             "-Djava.awt.headless=true",             // when running on macOS prevent little Java icon from popping up in Dock
+                                            "--add-modules=java.xml.bind",          // Tell Java 9 we want to use java.xml stuff
                                             "-jar", "target/uberjar/metabase.jar"], {
                 env: {
                     MB_DB_FILE: server.dbFile,
@@ -143,4 +145,4 @@ function createSharedResource(resourceName, {
             }
         }
     }
-}
\ No newline at end of file
+}