Blivet 3.6.0-9
    
      Backport iSCSI initiator name related fixes:
    - Allow changing iSCSI initiator name after setting it
      Resolves: rhbz#2221935
    - Add a basic test case for the iscsi module
      Resolves: rhbz#2221935
    - tests: Use blivet-specific prefix for targetcli backing files
      Resolves: rhbz#2221935
    - iscsi: Save firmware initiator name to /etc/iscsi/initiatorname.iscsi
      Resolves: rhbz#2221932
    - tests: Improve iscsi_test.ISCSITestCase
      Resolves: rhbz#2221935