Config SDNC to use maven 3.5

Configured SDNC jobs to use mvn version 3.5.  Also, removed obsolete
old (pre-global-jjb) docker build.

Change-Id: Ie3466d893404f96644a4ca0b3ac215e1a395f843
Issue-ID: CIMAN-296
Signed-off-by: Timoney, Dan (dt5972) <dtimoney@att.com>
diff --git a/jjb/sdnc/sdnc-northbound.yaml b/jjb/sdnc/sdnc-northbound.yaml
index 88b407a..a65e780 100644
--- a/jjb/sdnc/sdnc-northbound.yaml
+++ b/jjb/sdnc/sdnc-northbound.yaml
@@ -24,6 +24,7 @@
       deployAtEnd=true
     files: '**'
     archive-artifacts: ''
+    maven-version: "mvn35"
     build-node: ubuntu1604-builder-4c-4g
 
 - project:
@@ -37,6 +38,7 @@
     branch: 'master'
     mvn-settings: 'sdnc-northbound-settings'
     mvn-goals: 'clean install'
+    maven-version: "mvn35"
     mvn-opts: '-Xmx1024m -XX:MaxPermSize=256m'
 
 - project: