Add CtsStagedInstallHostTestCases to mts-mainlin-infra test plan.

Test: m mts && mts-tradefed run mts-mainline-infra
Bug: 140445078
Change-Id: Ibd919166ff3cb52933b7c7b6fbc2540d102a955f
diff --git a/tools/mts-tradefed/res/config/mts-mainline-infra.xml b/tools/mts-tradefed/res/config/mts-mainline-infra.xml
index 2bc7b8e..9b205a6 100644
--- a/tools/mts-tradefed/res/config/mts-mainline-infra.xml
+++ b/tools/mts-tradefed/res/config/mts-mainline-infra.xml
@@ -21,5 +21,6 @@
 
     <option name="compatibility:include-filter" value="CtsApexTestCases" />
     <option name="compatibility:include-filter" value="CtsAtomicInstallTestCases" />
+    <option name="compatibility:include-filter" value="CtsStagedInstallHostTestCases" />
 </configuration>