Following discussion "[Hawkular-dev] metrics: REST API evolution when querying for multiple metrics" on mailing list,
we agreed do change the existing "@post */raw/query" endpoints so that they understand tags.
There is 6 affected endpoints (all @post):
To do it, the class org.hawkular.metrics.api.jaxrs.QueryRequest will be modified to be able to receive tags.
Some methods may need to be added in MetricsService as well.