Merge pull request #41479 from rootfs/iscsi-fix

Automatic merge from submit-queue

make iscsi portals optional

**What this PR does / why we need it**: Make iSCSI portals optional

**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes #

**Special notes for your reviewer**:

**Release note**:

```release-note
NONE
```

api/swagger-spec/apps_v1beta1.json

@@ -1660,8 +1660,7 @@
     "required": [
      "targetPortal",
      "iqn",
-     "lun",
-     "portals"
+     "lun"
     ],
     "properties": {
      "targetPortal": {

api/swagger-spec/batch_v1.json

@@ -1665,8 +1665,7 @@
     "required": [
      "targetPortal",
      "iqn",
-     "lun",
-     "portals"
+     "lun"
     ],
     "properties": {
      "targetPortal": {

api/swagger-spec/extensions_v1beta1.json

@@ -7067,8 +7067,7 @@
     "required": [
      "targetPortal",
      "iqn",
-     "lun",
-     "portals"
+     "lun"
     ],
     "properties": {
      "targetPortal": {

api/swagger-spec/v1.json

@@ -18076,8 +18076,7 @@
     "required": [
      "targetPortal",
      "iqn",
-     "lun",
-     "portals"
+     "lun"
     ],
     "properties": {
      "targetPortal": {