Improve command package isolation.

pkg/commands/build/testdata/testcase-variable-ref/in/package/kustomization.yaml

@@ -0,0 +1,39 @@
+namePrefix: base-
+resources:
+ - cockroachdb-statefulset-secure.yaml
+ - cronjob.yaml
+configMapGenerator:
+- name: test-config-map
+  literals:
+    - foo=bar
+    - baz=qux
+vars:
+ - name: CDB_PUBLIC_SVC
+   objref:
+        kind: Service
+        name: cockroachdb-public
+        apiVersion: v1
+   fieldref:
+        fieldpath: metadata.name
+ - name: CDB_STATEFULSET_NAME
+   objref:
+        kind: StatefulSet
+        name: cockroachdb
+        apiVersion: apps/v1beta1
+   fieldref:
+        fieldpath: metadata.name
+ - name: CDB_STATEFULSET_SVC
+   objref:
+        kind: Service
+        name: cockroachdb
+        apiVersion: v1
+   fieldref:
+        fieldpath: metadata.name
+
+ - name: TEST_CONFIG_MAP
+   objref:
+        kind: ConfigMap
+        name: test-config-map
+        apiVersion: v1
+   fieldref:
+        fieldpath: metadata.name