Fixes #20559 - print rails log for test failures

Fixes #20201 - Global HTTP proxy for outgoing requests

This introduce two new settings to proxy outgoing HTTP
requests and one to except certain hosts from it.

The extensions for Excon::Connection and Net::HTTP
allow setting a proxy on their requests.

Refs #16740 - migration templates to use param macros

Fixes #13599 - Wrapped exception truncate moved to client

Removed message truncation from server side, and moved it to client
side - the message is truncated with ellipsis. On mouse over full
message is presented as popover.

This commit required a small change to `data-ajax-url` handler in client...

Fixes #17811 - Improve error message LDAP fail

Fixes #18618 - Use Dynflow as an ActiveJob backend

This commit initializes the Dynflow world in a very similar manner to
foreman-tasks (if a Dynflow world is available from foreman-tasks, we
use that one).

fixes #18500 - replace quiet_assets with sprockets-rails flag

• fixes #18512 - support sprockets-rails 3.x

The app.assets environment is no longer always configured, and instead
is only configured when the regular Rails environment is loaded. Loading
only the 'assets' group initializers isn't sufficient....

fixes #19977 - Fetch a value for a given subnet parameter name

This code will add a function to lookup a subnet parameter by name,
and returns it's value. It will return `nil` if no value was found.

The function is added to the renderer, so it can be called from...

Fixes #19700 - update rubocop rules

The following changes have been made:

- Performance/RedundantMerge:
changes lines such as:
```not_found_message.merge! :message => options```
to:
```not_found_message[:message] = options```

- converts str.match() to str =~ ()...

Fixes #13772 - orchestration now uses app logger