Backend: implement alerting query(Part 1)#819

Closed

vignesh-reddy wants to merge 3 commits intografana:backendfrom dneth:alerting

+336

Commits on Oct 11, 2019

Added queryNumericItems method

BC064890
authored and
BC064890
committed

Commits on Oct 16, 2019

Added queryNumericDataforItems method

BC064890
authored and
BC064890
committed

Commits on Oct 23, 2019

Converted the history into proper grafana response

BC064890
authored and
BC064890
committed