Add timeShift actions + spec to kapa queryConfig

ui/spec/kapacitor/reducers/queryConfigSpec.js

@@ -325,4 +325,18 @@ describe('Chronograf.Reducers.Kapacitor.queryConfigs', () => {
       expect(nextState[queryID].groupBy.time).to.equal(time)
     })
   })
+
+  describe('KAPA_TIME_SHIFT', () => {
+    it('can shift the time', () => {
+      const initialState = {
+        [queryID]: buildInitialState(queryID),
+      }
+
+      const shift = {quantity: 1, unit: 'd', duration: '1d'}
+      const action = timeShift(queryID, shift)
+      const nextState = reducer(initialState, action)
+
+      expect(nextState[queryID].shift).to.deep.equal([shift])
+    })
+  })
 })

ui/src/kapacitor/actions/queryConfigs.js

@@ -69,3 +69,11 @@ export const removeFuncs = (queryID, fields) => ({
     fields,
   },
 })
+
+export const timeShift = (queryID, shift) => ({
+  type: 'KAPA_TIME_SHIFT',
+  payload: {
+    queryID,
+    shift,
+  },
+})

ui/src/kapacitor/reducers/queryConfigs.js

@@ -125,6 +125,13 @@ const queryConfigs = (state = {}, action) => {
       // fields with no functions cannot have a group by time
       return {...state, [queryID]: nextQuery}
     }
+
+    case 'KAPA_TIME_SHIFT': {
+      const {queryID, shift} = action.payload
+      const nextQuery = timeShift(state[queryID], shift)
+
+      return {...state, [queryID]: nextQuery}
+    }
   }
   return state
 }