Force maven version 3.5

CCSDK requires maven version 3.5 or greater, needed by
OpenDaylight Neon release.

Change-Id: I2f696cc14a16ca0992030f6327ba05bb24fd28f8
Issue-ID: CCSDK-1389
Signed-off-by: Timoney, Dan (dt5972) <dtimoney@att.com>
diff --git a/jjb/ccsdk/apps.yaml b/jjb/ccsdk/apps.yaml
index 6995850..8053327 100644
--- a/jjb/ccsdk/apps.yaml
+++ b/jjb/ccsdk/apps.yaml
@@ -30,6 +30,7 @@
       deployAtEnd=true
     files: '**'
     archive-artifacts: ''
+    maven-version: "mvn35"
     build-node: ubuntu1604-builder-4c-4g
 
 - project:
@@ -44,6 +45,7 @@
     mvn-settings: 'ccsdk-apps-settings'
     mvn-goals: 'clean install'
     mvn-opts: '-Xmx1024m -XX:MaxPermSize=256m'
+    maven-version: "mvn35"
 
 - project:
     name: ccsdk-apps-clm
@@ -58,6 +60,7 @@
       - 'dublin':
           branch: 'dublin'
     mvn-settings: 'ccsdk-apps-settings'
+    maven-version: "mvn35"
     build-node: ubuntu1604-builder-4c-4g
 
 - project:
@@ -77,6 +80,7 @@
     archive-artifacts: ''
     docker-pom: 'pom.xml'
     mvn-profile: docker
+    maven-version: "mvn35"
     build-node: queue-docker-4c-4g
 #
 #- project: