Connect only nbft

[teclator]

Problem

It was requested to use nvme connect-nbft when UseNBFT was set by linuxrc but we call nvme connect-all.

• https://trello.com/c/eFJXEeep/3274-3-urgent-top-priority-connect-to-nbft-disks
• https://jira.suse.com/browse/PED-3138
• https://build.suse.de/request/show/288814

Solution

Implement the call as requested (it depends on https://build.suse.de/request/show/288814)

[coveralls]

Coverage: 40.767%. Remained the same when pulling a896a8d4bd0e6eb0ad8bee01d3800b4277dc3e11 on connect_only_nbft into b03368ee2f057785e7076ac4b0764b7e2eb0b147 on master.

[yast-bot]

:heavy_check_mark: Public Jenkins job #249 successfully finished :heavy_check_mark: Created OBS submit request #1061026

[yast-bot]

:heavy_check_mark: Internal Jenkins job #145 successfully finished :heavy_check_mark: Created IBS submit request #288909