Move //java/client/test/keystore next to the only two classes that use it.
Introduce a mechanism for injecting a custom WebDriver provider into the
Java test suite. This can be accomplished in one of two ways:
  - Using the -Dselenium.external.serverUrl system property to specfiy the
    URL of an external WebDriver server to run tests against. This server
    *must* conform to the JSON wire protocol.

  - Using the -Dselenium.external.supplierClass system property to
    specify the fully qualified name of a custom Supplier<WebDriver>
    implementation that can be found on the classpath. The designated class
    must have a public constructor that accepts two Capabilities objects
    as arguments for the desired and required capabilities, respectively.

Sample usage:

// Run the remote suite against an existing server:
./go test_remote jvmargs="-Dselenium.external.serverUrl=http://localhost:1234/wd/hub" log=true