jenkins/build-seed: Replace rainier with p10bmc

The rainier machine target has been replaced with p10bmc.

Change-Id: I1f3cd07250f9ca3f13fe1c1e4f23118d9f989a0b
Signed-off-by: Adriana Kobylak <anoo@us.ibm.com>
diff --git a/jenkins/build-seed b/jenkins/build-seed
index 7bf1ce0..89b348e 100755
--- a/jenkins/build-seed
+++ b/jenkins/build-seed
@@ -25,8 +25,8 @@
 
 SEED_MACHINES=(
     gsj
+    p10bmc
     palmetto
-    rainier
     romulus
     tiogapass
     witherspoon