Comment 0 for bug 1928948

Test steps:
1. register a brocade with rest_https protocol and initiator zoning_policy
2. attach a data volume which type is ds8k to a guest vm, success.
from the cinder/volume-xx.log:
2021-05-18 03:25:30.450 1491721 INFO cinder.zonemanager.drivers.brocade.brcd_fc_zone_driver [req-36d37687-abdf-4096-b703-f6eb0c7486c0 0688b01e6439ca32d698d20789d52169126fb41fb1a4ddafcebb97d854e836c9 821697be3e434ed1965e9be2aef73be2 - default default] Zone map to create: {'openstackc05076de33000309': ['c0:50:76:de:33:00:03:09', '50:05:07:63:06:18:53:88', '50:05:07:63:06:13:53:88', '50:05:07:63:06:10:d3:88', '50:05:07:63:06:1b:53:88', '50:05:07:63:06:10:53:88', '50:05:07:63:06:08:53:88', '50:05:07:63:06:1b:d3:88', '50:05:07:63:06:18:93:88', '50:05:07:63:06:1b:13:88', '50:05:07:63:06:08:93:88', '50:05:07:63:06:03:13:88', '50:05:07:63:06:18:13:88', '50:05:07:63:06:08:13:88', '50:05:07:63:06:10:13:88']}

from the fabric cmd:
fcsw60:FID128:admin_icic> zoneshow openstackc05076de33000309
 zone: openstackc05076de33000309
  c0:50:76:de:33:00:03:09; 50:05:07:63:06:18:53:88;
  50:05:07:63:06:13:53:88; 50:05:07:63:06:10:d3:88;
  50:05:07:63:06:1b:53:88; 50:05:07:63:06:10:53:88;
  50:05:07:63:06:08:53:88; 50:05:07:63:06:1b:d3:88;
  50:05:07:63:06:18:93:88; 50:05:07:63:06:1b:13:88;
  50:05:07:63:06:08:93:88; 50:05:07:63:06:03:13:88;
  50:05:07:63:06:18:13:88; 50:05:07:63:06:08:13:88;
  50:05:07:63:06:10:13:88
3. continue to attach a data volume which type is v7k60, success:
from the volume-xxxx.log:
2021-05-18 03:33:54.630 1489056 INFO cinder.zonemanager.drivers.brocade.brcd_fc_zone_driver [req-f815457f-31ed-4ed3-a0c4-788e260b2505 0688b01e6439ca32d698d20789d52169126fb41fb1a4ddafcebb97d854e836c9 821697be3e434ed1965e9be2aef73be2 - default default] Zone map to create: {}
2021-05-18 03:33:54.630 1489056 INFO cinder.zonemanager.drivers.brocade.brcd_fc_zone_driver [req-f815457f-31ed-4ed3-a0c4-788e260b2505 0688b01e6439ca32d698d20789d52169126fb41fb1a4ddafcebb97d854e836c9 821697be3e434ed1965e9be2aef73be2 - default default] Zone map to update: {'openstackc05076de33000309': ['c0:50:76:de:33:00:03:09', '50:05:07:68:0b:23:ba:c7', '50:05:07:68:0b:21:ba:c7', '50:05:07:68:0b:24:ba:c7', '50:05:07:68:0b:21:ba:c6', '50:05:07:68:0b:24:ba:c6', '50:05:07:68:0b:23:ba:c6']}

from the fabric cmd:
fcsw60:FID128:admin_icic> zoneshow openstackc05076de33000309
 zone: openstackc05076de33000309
  c0:50:76:de:33:00:03:09; 50:05:07:68:0b:23:ba:c7;
  50:05:07:68:0b:21:ba:c7; 50:05:07:68:0b:24:ba:c7;
  50:05:07:68:0b:21:ba:c6; 50:05:07:68:0b:24:ba:c6;
  50:05:07:68:0b:23:ba:c6

Expected result:
the origin ports in the created zone should not be totally replaced.