[docker-lldp] Fix lldpcli issue when description has special characters (sonic-net#40)

Signed-off-by: Zhenggen Xu <[email protected]>

Author: zhenggen-xu

dockers/docker-lldp-sv2/lldpmgrd

@@ -157,7 +157,7 @@ class LldpManager(object):
 
         # if there is a description available, also configure that
         if port_desc:
-            lldpcli_cmd += " description {}".format(port_desc)
+            lldpcli_cmd += " description '{}'".format(port_desc)
         else:
             log_info("Unable to retrieve description for port '{}'. Not adding port description".format(port_name))