Foreman » Smart Proxy

fixes #6722 - correct require for kerberos utilities

fixes #6589 - add trusted_hosts check back

fixes #6522 - move request code out of chef module

The patch also moves foreman_ssl_ca, foreman_ssl_cert and
foreman_ssl_key config options from Chef plugin config to global config
and adds fallback to the ssl_* options if these are not defined.

Fixes #6743 - Common code for manage_subnet? in ISC and Native MS

Fixes #6744 - Avoid nested arrays and extra array copies in the ISC DHCP config parser

Fixes #6745 - Clean up the params input to the DHCP::Server.addRecord method

This fixes the ability to match and ignore pre-existing identical DHCP records.

fixes #4699 - support Puppet environments API for directory envs

Fixes #6689 - Allow nil mac address for TFTP API calls that do not require a MAC

fixes #6661: trailing slash is not required in urls

fixes #6584 - Replace Kernel#open with File.open