DO NOT MERGE: minimal repro for origin annotation bug

[mightyguava]

Context: #4783 (comment)

I believe the root cause is this line

kustomize/api/resource/origin.go

Line 57 in d6e40a3

path = absPath[strings.Index(absPath[1:], "/")+1:][1:]

. This is where /notCloned is trimmed, but this only works if the kustomization is not at the repo root, and has a path.

=== RUN   TestRemoteResourceAnnoOriginFailing
    remoteload_test.go:62: 
        	Error Trace:	remoteload_test.go:62
        	            				remoteload_test.go:78
        	            				remoteload_test.go:412
        	Error:      	Not equal: 
        	            	expected: "apiVersion: v1\nkind: Pod\nmetadata:\n  annotations:\n    config.kubernetes.io/origin: |\n      repo: https://github.com/mightyguava/kustomize-bug.git\n      path: pod.yaml\n  labels:\n    app: myapp\n  name: myapp-pod\nspec:\n  containers:\n  - image: nginx:1.7.9\n    name: nginx\n"
        	            	actual  : "apiVersion: v1\nkind: Pod\nmetadata:\n  annotations:\n    config.kubernetes.io/origin: |\n      path: notCloned/pod.yaml\n      repo: https://github.com/mightyguava/kustomize-bug\n  labels:\n    app: myapp\n  name: myapp-pod\nspec:\n  containers:\n  - image: nginx:1.7.9\n    name: nginx\n"
        	            	
        	            	Diff:
        	            	--- Expected
        	            	+++ Actual
        	            	@@ -5,4 +5,4 @@
        	            	     config.kubernetes.io/origin: |
        	            	-      repo: https://github.com/mightyguava/kustomize-bug.git
        	            	-      path: pod.yaml
        	            	+      path: notCloned/pod.yaml
        	            	+      repo: https://github.com/mightyguava/kustomize-bug
        	            	   labels:
        	Test:       	TestRemoteResourceAnnoOriginFailing
--- FAIL: TestRemoteResourceAnnoOriginFailing (0.64s)

[k8s-ci-robot]

Hi @mightyguava. Thanks for your PR.

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[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

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[mightyguava]

Closing since the tests in #4783 already cover this case.