Changed default timeout for run-tests.py from 30 to 180 seconds.

As e.g. test-http-proxy already takes quite some time (about a minute here)
and tests usually should clean up after themselves, the timeout should only be
hit in case of other problems.

tests/run-tests.py

@@ -32,7 +32,7 b' parser.add_option("-s", "--cover_stdlib"'
     help="print a test coverage report inc. standard libraries")
 parser.add_option("-C", "--annotate", action="store_true",
     help="output files annotated with coverage")
-parser.set_defaults(timeout=30)
+parser.set_defaults(timeout=180)
 (options, args) = parser.parse_args()
 verbose = options.verbose
 coverage = options.cover or options.cover_stdlib or options.annotate