Fixed internal error (undefined log). bnc#868436
Updated changelog
Merge pull request #171 from mchf/bnc868436-internal-error

internal error - undefined 'log'
Workaround for ini agent issue.

Ini agent sometimes do not delete file when requested after write.
This is hotfix/workaround which can be removed once the issue is fixed.
Updated changelog
Merge pull request #172 from mchf/agent-ini-workaround

Agent ini issue workaround
Implementation of LanItemsClass#delete_dev

This method removes cached configuration from internal caches of
LanItemsClass even underlying NetworkInterfaces (so deletes config from
system)
Testsuite for LanItemsClass#delete_dev
inst_setup_dhcp: clean also LanItems' cache when deleting. bcn#868830
Updated changelog
Testsuite for LanItemsClass#DeleteItem
Refactoring: LanItemsClass#DeleteItem
Added comments to SetItemName, SetCurrentName
Merge pull request #173 from mchf/bnc868859-delete-item

When deleting dev config in inst_setup_dhcp, update also LanItems::Items