Do not follow SDK member dependencies for APEX payloads.

Test: m nothing
Test: `m` with prebuilts/runtime in the manifest (along with other
  fixes)
Bug: 151303681
Change-Id: I450d476975c7ab4434228b8c4baf3af192142211
diff --git a/sdk/testing.go b/sdk/testing.go
index 4361754..0fc6baa 100644
--- a/sdk/testing.go
+++ b/sdk/testing.go
@@ -44,14 +44,15 @@
 	` + cc.GatherRequiredDepsForTest(android.Android, android.Windows)
 
 	mockFS := map[string][]byte{
-		"build/make/target/product/security":         nil,
-		"apex_manifest.json":                         nil,
-		"system/sepolicy/apex/myapex-file_contexts":  nil,
-		"system/sepolicy/apex/myapex2-file_contexts": nil,
-		"myapex.avbpubkey":                           nil,
-		"myapex.pem":                                 nil,
-		"myapex.x509.pem":                            nil,
-		"myapex.pk8":                                 nil,
+		"build/make/target/product/security":           nil,
+		"apex_manifest.json":                           nil,
+		"system/sepolicy/apex/myapex-file_contexts":    nil,
+		"system/sepolicy/apex/myapex2-file_contexts":   nil,
+		"system/sepolicy/apex/mysdkapex-file_contexts": nil,
+		"myapex.avbpubkey":                             nil,
+		"myapex.pem":                                   nil,
+		"myapex.x509.pem":                              nil,
+		"myapex.pk8":                                   nil,
 	}
 
 	cc.GatherRequiredFilesForTest(mockFS)