Add CtsStagedInstallHostTestCases to MTS.

Test: m mts && mts-tradefed run mts-mainline-infra
Bug: 140440506
Change-Id: I82e38c40aa984646fd8cb2571d40f3645f0025f7
Merged-In: Id89ef7c34b74f006cc5bc40015216418f88ec205
diff --git a/hostsidetests/stagedinstall/Android.bp b/hostsidetests/stagedinstall/Android.bp
index 01bb8be..49f7f87 100644
--- a/hostsidetests/stagedinstall/Android.bp
+++ b/hostsidetests/stagedinstall/Android.bp
@@ -32,7 +32,8 @@
 
     test_suites: [
         "cts",
-        "general-tests"
+        "general-tests",
+        "mts",
     ],
 }