chore(tests): add missing sauceLabs config base object
chore(tests): add missing sauceLabs config base object

Forgot to mention: commit 646a203 was mostly taken from AngularJS’s
Karma config. So I forgot this part and the Travis-only section of the
config failed. Adding this should fix Travis build fail.

I haven’t added karma-sauce-launcher yet, but Travis was connecting to
Sauce Labs anyway so let’s see if this works anyway.

MartinSandstrom/angular-apimock,seriema/angular-apimock,seriema/angular-apimock,MartinSandstrom/angular-apimock