A previous change moved the "source" field from the
Counter to the function that creates meter messages.
These tests are not run in the CI environment because
they depend on having spidermonkey installed, and it
is not available on that server.
Change-Id: I1e34ce087ae56bc18875ebe28b9cdf48ce8f493c
Signed-off-by: Doug Hellmann <doug.hellmann@dreamhost.com>