bugfix/BUG-872590 wrap ephemeral-storage in null check (#786)

* perform null check on dep.ingress properly on older Helm versions

* wrap ephemeral-storage in null checks

* fix requests/limits typo

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Co-authored-by: Evan1oconto <evanloconto@gmail.com>

charts/pega/charts/installer/templates/_pega-installer-job.tpl

@@ -112,11 +112,15 @@ spec:
           requests:
             cpu: "{{ .root.Values.resources.requests.cpu }}"
             memory: "{{ .root.Values.resources.requests.memory }}"
-            ephemeral-storage: "{{ .root.Values.resources.requests.ephemeralStorage | default "0G" }}"
+            {{- if .root.Values.resources.requests.ephemeralStorage }}
+              ephemeral-storage: "{{ .root.Values.resources.requests.ephemeralStorage }}"
+            {{- end }}
           limits:
             cpu: "{{ .root.Values.resources.limits.cpu }}"
             memory: "{{ .root.Values.resources.limits.memory }}"
-            ephemeral-storage: "{{ .root.Values.resources.limits.ephemeralStorage | default "0G" }}"
+            {{- if .root.Values.resources.limits.ephemeralStorage }}
+              ephemeral-storage: "{{ .root.Values.resources.limits.ephemeralStorage }}"
+            {{- end }}
         volumeMounts:
 {{- if .root.Values.installerMountVolumeClaimName }}
         - name: {{ template "pegaInstallerMountVolume" }}