Fix migration name generation (#1346)

Author: michaeljguarino

plural/helm/plural/Chart.yaml

@@ -2,7 +2,7 @@ apiVersion: v2
 name: plural
 description: A helm chart for installing plural
 appVersion: 0.11.8
-version: 0.10.97
+version: 0.10.98
 dependencies:
   - name: hydra
     version: 0.26.5

plural/helm/plural/templates/_helpers.tpl

@@ -93,7 +93,7 @@ app.kubernetes.io/managed-by: {{ .Release.Service }}
 {{- end -}}
 
 {{- define "plural.migration-name" -}}
-plural-migration-{{ .Values.image.tag | default .Chart.AppVersion | sha256sum | trunc 8 }}
+plural-migration-{{ .Values.global.tag | default .Values.image.tag | default .Chart.AppVersion | sha256sum | trunc 8 }}
 {{- end -}}
 
 {{- define "plural.wait-for-migration" -}}