fix(ingestion): Fix scope of .Values.globals in ingestion

Because we're in a `range` inside `datahub-ingestion-cron`,
we can't access global values via `{{ .Values.global...`
Instead, we need `{{ $.Values...`.  Otherwise, we get
an error:

```
Error: template: datahub/charts/datahub-ingestion-cron/templates/cron.yaml:78:34: executing "datahub/charts/datahub-ingestion-cron/templates/cron.yaml" at <.Values.global.nodeSelector>: nil pointer evaluating interface {}.global
helm.go:84: [debug] template: datahub/charts/datahub-ingestion-cron/templates/cron.yaml:78:34: executing "datahub/charts/datahub-ingestion-cron/templates/cron.yaml" at <.Values.global.nodeSelector>: nil pointer evaluating interface {}.global
```

Fix so that it uses globals or the cron specific `nodeSelector`
and `tolerations` instead of triggering a nil pointer error

charts/datahub/Chart.yaml

@@ -26,7 +26,7 @@ dependencies:
     repository: file://./subcharts/datahub-mce-consumer
     condition: global.datahub_standalone_consumers_enabled
   - name: datahub-ingestion-cron
-    version: 0.2.140
+    version: 0.2.141
     repository: file://./subcharts/datahub-ingestion-cron
     condition: datahub-ingestion-cron.enabled
   - name: acryl-datahub-actions

charts/datahub/subcharts/datahub-ingestion-cron/Chart.yaml

@@ -12,7 +12,7 @@ description: A Helm chart for Kubernetes
 type: application
 # This is the chart version. This version number should be incremented each time you make changes
 # to the chart and its templates, including the app version.
-version: 0.2.140
+version: 0.2.141
 # This is the version number of the application being deployed. This version number should be
 # incremented each time you make changes to the application.
 appVersion: v0.11.0

charts/datahub/subcharts/datahub-ingestion-cron/templates/cron.yaml

@@ -75,15 +75,15 @@ spec:
               {{- toYaml .extraSidecars | nindent 10 }}
             {{- end }}
           restartPolicy: {{ default "OnFailure" .restartPolicy }}
-          {{- with default .Values.global.nodeSelector .nodeSelector }}
+          {{- with default $.Values.global.nodeSelector .nodeSelector }}
           nodeSelector:
             {{- toYaml . | nindent 12 }}
           {{- end }}
           {{- if .affinity }}
           affinity:
             {{- toYaml .affinity | nindent 12 }}
           {{- end }}
-          {{- with default .Values.global.tolerations .tolerations }}
+          {{- with default $.Values.global.tolerations .tolerations }}
           tolerations:
             {{- toYaml . | nindent 12 }}
           {{- end }}