configurations: yv4 sentinel dome: add interface

Add ManagedHost interface to yv4 sentinel dome, which will be
used by bmcweb for system discovery and other dbus operations.

Change-Id: I633722ccfa7d957d976ef7dc37fdda12df35d59e
Signed-off-by: Oliver Brewka <mox669.dev@gmail.com>
diff --git a/configurations/yosemite4_sentineldome_t2_retimer.json b/configurations/yosemite4_sentineldome_t2_retimer.json
index ad07c4e..2d2e494 100644
--- a/configurations/yosemite4_sentineldome_t2_retimer.json
+++ b/configurations/yosemite4_sentineldome_t2_retimer.json
@@ -475,6 +475,9 @@
     "xyz.openbmc_project.Inventory.Decorator.AssetTag": {
         "AssetTag": "$PRODUCT_ASSET_TAG"
     },
+    "xyz.openbmc_project.Inventory.Decorator.ManagedHost": {
+        "HostIndex": "$bus % 15"
+    },
     "xyz.openbmc_project.Inventory.Decorator.Revision": {
         "Version": "$PRODUCT_VERSION"
     },