beb28439dc
This patch replaces regex matching of text output with parsing of JSON output in ovs_lib.get_vif_port_by_id. This makes the code more reliable as subtle, possibly even cosmetic, changes in ovs-vsctl output format could cause the regular expression match to fail. Also, this makes the code consistent with ovs_lib.get_vif_port_set which already uses JSON output. Finally this patch slightly changes the behaviour of ovs_lib.get_vif_port_by_id returning None if elements such as mac address or ofport were not available. Change-Id: Ia985a130739c72b5b88414a79b2c6083ca6a0a00 Closes-Bug: #1280827