Adds wait loop to entrypoint when --multus-conf-file=auto (#234)

* [entrypoint] Adds wait loop when using --multus-conf-file=auto waits for presence of any conf file

* [entrypoint] fixes incorrect logical comparison

* [entrypoint] add log every 5 tries, fix tries increment, fix logical comparison

* [entrypoint] fix attempt output

images/entrypoint.sh

@@ -157,30 +157,39 @@ fi
 
 if [ "$MULTUS_CONF_FILE" == "auto" ]; then
   echo "Generating Multus configuration file ..."
+  found_master=false
+  tries=0
+  while [ $found_master == false ]; do
     MASTER_PLUGIN="$(ls $CNI_CONF_DIR | grep -E '\.conf(list)?$' | grep -Ev '00-multus\.conf' | head -1)"
     if [ "$MASTER_PLUGIN" == "" ]; then
+      if [ $tries -lt 600 ]; then
+        if ! (($tries % 5)); then
+          echo "Attemping to find master plugin configuration, attempt $tries"
+        fi
+        let "tries+=1"
+        sleep 1;
+      else
         echo "Error: Multus could not be configured: no master plugin was found."
         exit 1;
-  else
-    ISOLATION_STRING=""
-    if [ "$MULTUS_NAMESPACE_ISOLATION" == true ]; then
-      ISOLATION_STRING="\"namespaceIsolation\": true,"
       fi
+    else
+      found_master=true
       MASTER_PLUGIN_JSON="$(cat $CNI_CONF_DIR/$MASTER_PLUGIN)"
       CONF=$(cat <<-EOF
-			{
+{
   "name": "multus-cni-network",
   "type": "multus",
-        $ISOLATION_STRING
   "kubeconfig": "$MULTUS_KUBECONFIG_FILE_HOST",
   "delegates": [
     $MASTER_PLUGIN_JSON
   ]
-			}
+}
-			EOF
+EOF
       )
       echo $CONF > $CNI_CONF_DIR/00-multus.conf
+      echo "Config file created @ $CNI_CONF_DIR/00-multus.conf"
     fi
+  done
 fi
 
 # ---------------------- end Generate "00-multus.conf".