Use clearly invalid default values for swarm config_default
Use clearly invalid default values for swarm config_default

BUG=
TEST=


Review URL: https://chromiumcodereview.appspot.com/10828009

git-svn-id: 239fca9b83025a0b6f823aeeca02ba5be3d9fd76@148312 0039d316-1c4b-4281-b951-d872f2087c98

eunchong/build,eunchong/build,eunchong/build,eunchong/build