Missing environment variables ref properties for k8s initContainer

[GangHun-Jo]

Description

It seems below k8s initContainer properties are not �supported with spring-cloud-deployer

• initContainers[].env[].valueFrom.fieldRef
• initContainers[].envFrom[].configMapRef
• initContainers[].envFrom[].secretRef

spec:
  template:
    spec:
      initContainers:
        - name: my-init-container
          env:             
          - name: POD_UID
              valueFrom:
                fieldRef:
                  apiVersion: v1
                  fieldPath: metadata.uid
          envFrom: 
            - configMapRef:
                name: myConfigMap
            - secretRef:
                name: mySecret