Add support for ports filtering in XtremIO driver

Registered by Ivan Pchelintsev

If there are some iSCSI target ports (ESXi for example) that are not connected to the OpenStack host,
Openstack iSCSI login command wait until iSCSI login timeout.
The XtremIO Cinder driver needs a new option to prevent iSCSI timeouts.

Blueprint information

Status:
Complete
Approver:
None
Priority:
Low
Drafter:
Ivan Pchelintsev
Direction:
Approved
Assignee:
Ivan Pchelintsev
Definition:
Approved
Series goal:
Accepted for wallaby
Implementation:
Implemented
Milestone target:
milestone icon wallaby-3
Started by
Brian Rosmaita
Completed by
Brian Rosmaita

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