Improved 'DNS Records' form validation (detection of duplicate records).
flake8
log auth errors in ilo_hp plugin
Merge pull request #998 from andrzej-jankowski/ilo

[Scan] ilo_hp - log auth errors
Code review fix.
Merge pull request #997 from xor-xor/ralph_1813

Improved 'DNS Records' form validation (detection of duplicate records).