fix missing namespace environment variables for various services (#2828)

the FISSION_..._NAMESPACE environment variables are used by all services during init
to check if the CRDs are loaded.

Move them to the 'fission-resource-namespace' macro to ensure all services know the relavant namespaces.

Signed-off-by: Anthony King <anthony@datapane.com>

charts/fission-all/templates/executor/deployment.yaml

@@ -37,12 +37,6 @@ spec:
         {{- end }}
         - name: FETCHER_IMAGE_PULL_POLICY
           value: "{{ .Values.pullPolicy }}"
-        - name: FISSION_BUILDER_NAMESPACE
-          value: "{{ .Values.builderNamespace }}"
-        - name: FISSION_FUNCTION_NAMESPACE
-          value: "{{ .Values.functionNamespace }}"
-        - name: FISSION_DEFAULT_NAMESPACE
-          value: "{{ .Values.defaultNamespace }}"
         - name: RUNTIME_IMAGE_PULL_POLICY
           value: "{{ .Values.pullPolicy }}"
         - name: ADOPT_EXISTING_RESOURCES