CTS tests to verify multi-user emulated storage.

Verifies that each user has its own isolated emulated storage, minus
shared storage for OBB files.  Also tests to verify that legacy
filesystem paths like "/sdcard" continue working.

Adds early support for multi-user CTS tests, should eventually be
moved into ITestDevice and RemoteAndroidTestRunner.

Bug: 7048947
Change-Id: I0573b9236b267ab798676926910ec4e1890fe7cb
diff --git a/CtsTestCaseList.mk b/CtsTestCaseList.mk
index c93fafb..8c2b798 100644
--- a/CtsTestCaseList.mk
+++ b/CtsTestCaseList.mk
@@ -25,7 +25,8 @@
 	CtsSimpleAppInstallDiffCert \
 	CtsTargetInstrumentationApp \
 	CtsUsePermissionDiffCert \
-	CtsWriteExternalStorageApp
+	CtsWriteExternalStorageApp \
+	CtsMultiUserStorageApp
 
 cts_support_packages := \
 	CtsAccelerationTestStubs \