Fixes #23081 - Fix Style/SafeNavigation cop

Fixes #19871 - Fix Style/MethodDefParentheses cop

Fixes #19706 - don't treat DHCP leases as conflicts

Refs #20119 - Be more descriptive when validating hostname

Explain that this is not Foreman's limitation, but comes from RFCs.

Fixes #20119 - Be more descriptive when validating hostname

Signed-off-by: Boaz Shuster <ripcurld.github@gmail.com>

fixes #17533 - provision dhcp for bond child macs

fixes #17007 - normalize dns records before comparison

fixes #16952 - pass type to proxy when destroying dns records

fixes #16900 - ensure interface mac address is unicast

Fixes #16057 - added dns_lookup template helper