Adds a correct error string for network validation
Adds a correct error string for network validation

Fixes the negative networking test to include the new error string
from recent Windows builds.

Signed-off-by: Justin Terry <f0c38945ef01caad6a7c3d4b90a29703264b34a4@microsoft.com>

TheBigBear/docker,TheBigBear/docker,TheBigBear/docker