Fixes #14184 - allow filter creation for users with taxonomies

fixes #14179 - don't merge NIC compute attrs in ComputeProfileMerge

When creating a host over the API and specifying interface compute
attributes, the interface attributes were overwritten from the compute
profile. Example request:

{"host":{"interfaces_attributes":{"0":{"primary":"true","compute_attributes":{"model":"e1000"}}}, ...}}...

Fixes #6924 - Additional validations for Setting

refs #9470 - set :limit on column, fix MailNotification initializer

MailNotification.new failed unless it had a Hash argument, hence the
factory had been changed from default behaviour. It also then ignored
all attributes except a given few listed in initialize_with.

fixes #14155 - fix leaks between tests with random ordering

- A test for the Rabl use_controller_name_as_json_root extension was
leaking as the old value was only reset in `setup` methods. When the
test was last in the test case, the configuration wasn't reset....

Fixes #14154 - fix adrift reports show page

Fixes #9470 - Adds an option to send puppet error emails for all host to a user

Adds an option to the puppet error state notification - Subscribe to all hosts, when error occurs from any authorize host, the user will get an email

Fixes #9932 - fix preallocate attribute mapping

Fixes #13545 - STI permission checking always using base class

This fixes permission checks on STI objects. Due to these methods existing
in Procs and being included in the base class at run time resource_class was
returning the base class. I can only presume this is related to a ruby or rails 4...

Fixes #14113 - run dhcp orchestration only on DHCP subnets