commit e2e37a1d7dc410393c0813e0ae458b79bd7e323e
author azvyagintsev <azvyagintsev@mirantis.com> Thu Nov 01 14:45:49 2018 +0200
committer azvyagintsev <azvyagintsev@mirantis.com> Thu Nov 01 16:11:37 2018 +0200
tree fc2bc29b342b30267cefa4b3ee34be783587ff24
parent 60963335aed2f3a1a715844e03a77333e0349d2c

Change logic for boot-sources import

  * Maas have 'default' switch, in case no boot-source
    configured => switch forcelly to default one.
    Our old flow was:
    delete all sources=> add mirror one => ran import.
    In rare cases, during time 'delete <=> add new' maas engine
    might add default one mirror, which broke mirror logic.
    So, we would try to delete all 'boot_sources_delete_all_others'
    exactly after source add.
  * Misc: add maasng() simple wrapper.

Closes-Bug: PROD-21614 (PROD:21614)

Change-Id: I8c783b5ec12ac046f41453678586a4eebcfcb96b