Rename basebuild to builder

Rename nodes from "basebuild" to "builder" in preparation
for updating to common-packer.

Change-Id: I6ff64e3ee5c856391430296aded45d84c46de171
Issue-ID: CIMAN-33
Signed-off-by: Jessica Wagantall <jwagantall@linuxfoundation.org>
diff --git a/jjb/appc/appc-cdt.yaml b/jjb/appc/appc-cdt.yaml
index 22e57e3..ea973d3 100644
--- a/jjb/appc/appc-cdt.yaml
+++ b/jjb/appc/appc-cdt.yaml
@@ -14,4 +14,4 @@
     mvn-settings: 'appc-cdt-settings'
     files: '**'
     archive-artifacts: ''
-    build-node: ubuntu1604-basebuild-4c-4g
+    build-node: ubuntu1604-builder-4c-4g