Add a default timeout when a test isn't specified.

Signed-off-by: Fathi Boudra <fathi.boudra@linaro.org>
diff --git a/lava-submit.py b/lava-submit.py
index 957ebe5..1c654e5 100755
--- a/lava-submit.py
+++ b/lava-submit.py
@@ -17,7 +17,6 @@
     'kernel-version': 300,
     'leb-basic-graphics': 7200,
     'ltp': 7200,
-    'mauve': 18000,
     'mysql': 300,
     'network-tests-basic': 1200,
     'perf': 300,
@@ -248,7 +247,7 @@
             actions.append({
                 'command': 'lava_test_shell',
                 'parameters': {
-                    'timeout': tests_timeout[test],
+                    'timeout': tests_timeout.get(test, 18000),
                     'testdef_repos': test_list
                 }
             })