A TimeSeriesRatio specifies two TimeSeries to use
for computing the good_service / total_service ratio. The specified
TimeSeries must have ValueType = DOUBLE or ValueType = INT64
and must have MetricKind = DELTA or MetricKind = CUMULATIVE. The
TimeSeriesRatio must specify exactly two of good, bad, and total,
and the relationship good_service + bad_service = total_service will
be assumed.
A monitoring filter
<https://cloud.google.com/monitoring/api/v3/filters>__
specifying a TimeSeries quantifying bad service, either
demanded service that was not provided or demanded service
that was of inadequate quality. Must have ValueType =
DOUBLE or ValueType = INT64 and must have MetricKind =
DELTA or MetricKind = CUMULATIVE.
