Move imu pi to be the -5 pi

Change-Id: Ia7320d7ff3f9efd0b4d89329dcd42292d50345fa
Signed-off-by: James Kuszmaul <jabukuszmaul+collab@gmail.com>
diff --git a/y2022/y2022_imu.json b/y2022/y2022_imu.json
index 6ded52a..35f1ab0 100644
--- a/y2022/y2022_imu.json
+++ b/y2022/y2022_imu.json
@@ -390,10 +390,10 @@
       "name": "imu",
       "hostname": "imu",
       "hostnames": [
-        "pi-971-7",
-        "pi-7971-7",
-        "pi-8971-7",
-        "pi-9971-7"
+        "pi-971-5",
+        "pi-7971-5",
+        "pi-8971-5",
+        "pi-9971-5"
       ],
       "port": 9971
     },