A sparkChart is a small chart suitable for inclusion in a
table-cell or inline in text. This message contains the configuration
for a sparkChart to show up on a Scorecard, showing recent trends of the
scorecard’s timeseries.
The lower bound on data point frequency in the chart
implemented by specifying the minimum alignment period to use
in a time series query. For example, if the data is published
once every 10 minutes it would not make sense to fetch and
align data at one minute intervals. This field is optional and
exists only as a hint.
