build-seed: add gb200nvl-obmc and remove palmetto

Nvidia has provided a build server so add a system per their request.
Palmetto was removed as it is no longer supported by IBM.

Change-Id: Ia03affe3b6f879822552b1ce3c841e3c666a0f33
Signed-off-by: Andrew Geissler <geissonator@yahoo.com>
diff --git a/jenkins/build-seed b/jenkins/build-seed
index 07daf7e..094be92 100755
--- a/jenkins/build-seed
+++ b/jenkins/build-seed
@@ -28,11 +28,11 @@
     catalina
     e3c246d4i
     evb-npcm845
+    gb200nvl-obmc
     gbs
     harma
     minerva
     p10bmc
-    palmetto
     romulus
     ventura
     witherspoon