Make SDN read config file from sysconfig

roles/openshift_sdn/files/sdn.yaml

@@ -37,7 +37,7 @@ spec:
       # It relies on an up to date node-config.yaml being present.
       - name: sdn
         image: " "
-        command: 
+        command:
         - /bin/bash
         - -c
         - |
@@ -63,7 +63,23 @@ spec:
           # if the node config doesn't exist yet, wait until it does
           retries=0
           while true; do
-            if [[ ! -f /etc/origin/node/node-config.yaml ]]; then
+            file=/etc/sysconfig/origin-node
+            if [[ -f /etc/sysconfig/atomic-openshift-node ]]; then
+              file=/etc/sysconfig/atomic-openshift-node
+            elif [[ -f /etc/sysconfig/origin-node ]]; then
+              file=/etc/sysconfig/origin-node
+            else
+              echo "info: Waiting for the node sysconfig file to be created" 2>&1
+              sleep 15 & wait
+              continue
+            fi
+            config_file="$(sed -nE 's|^CONFIG_FILE=([^#].+)|\1|p' "${file}" | head -1)"
+            if [[ -z "${config_file}" ]]; then
+              echo "info: Waiting for CONFIG_FILE to be set" 2>&1
+              sleep 15 & wait
+              continue
+            fi
+            if [[ ! -f ${config_file} ]]; then
               echo "warning: Cannot find existing node-config.yaml, waiting 15s ..." 2>&1
               sleep 15 & wait
               (( retries += 1 ))
@@ -102,7 +118,7 @@ spec:
           oc config --config=/tmp/kubeconfig set-credentials sa "--token=$( cat /var/run/secrets/kubernetes.io/serviceaccount/token )"
           oc config --config=/tmp/kubeconfig set-context "$( oc config --config=/tmp/kubeconfig current-context )" --user=sa
           # Launch the network process
-          exec openshift start network --config=/etc/origin/node/node-config.yaml --kubeconfig=/tmp/kubeconfig --loglevel=${DEBUG_LOGLEVEL:-2}
+          exec openshift start network --config=${config_file} --kubeconfig=/tmp/kubeconfig --loglevel=${DEBUG_LOGLEVEL:-2}
 
         securityContext:
           runAsUser: 0