Add yAxis formatter

Changelog: fixed

app/assets/javascripts/projects/pipelines/charts/components/pipeline_charts.vue

@@ -199,6 +199,16 @@ export default {
         },
       ];
     },
+    chartOptions() {
+      return {
+        ...this.$options.timesChartOptions,
+        yAxis: {
+          axisLabel: {
+            formatter: (value) => value,
+          },
+        },
+      };
+    },
   },
   methods: {
     hideAlert() {
@@ -314,7 +324,7 @@ export default {
         <strong>{{ __('Pipeline durations for the last 30 commits') }}</strong>
         <gl-column-chart
           :height="$options.chartContainerHeight"
-          :option="$options.timesChartOptions"
+          :option="chartOptions"
           :bars="timesChartTransformedData"
           :y-axis-title="__('Minutes')"
           :x-axis-title="__('Commit')"

spec/frontend/projects/pipelines/charts/components/pipeline_charts_spec.js

@@ -60,7 +60,7 @@ describe('~/projects/pipelines/charts/components/pipeline_charts.vue', () => {
       expect(chart.props('yAxisTitle')).toBe('Minutes');
       expect(chart.props('xAxisTitle')).toBe('Commit');
       expect(chart.props('bars')).toBe(wrapper.vm.timesChartTransformedData);
-      expect(chart.props('option')).toBe(wrapper.vm.$options.timesChartOptions);
+      expect(chart.props('option')).toBe(wrapper.vm.chartOptions);
     });
   });