Move CtsDevicePolicyManagerTestCases to group presubmit-large

The test config takes longer than 15mins to run. Move it to a dedicated
group for running slow presubmit Test Mapping test.

Some more context is in the referenced bug, e.g, b/174495337
The group will work exactly the same as presubmit for now.

Bug: 174654670
Bug: 174495337
Test: none
Change-Id: I71b6e5b285d0f12b43bf5312f9cde814d2f5f7da
diff --git a/cmds/locksettings/TEST_MAPPING b/cmds/locksettings/TEST_MAPPING
index c1cba5f..7a449ef 100644
--- a/cmds/locksettings/TEST_MAPPING
+++ b/cmds/locksettings/TEST_MAPPING
@@ -1,5 +1,5 @@
 {
-    "presubmit": [
+    "presubmit-large": [
         {
             "name": "CtsDevicePolicyManagerTestCases",
             "options": [