Before this change if a variable was of type int or bool and the variable was referenced
by another variable, the type would change to string.

eg. defaults/main.yml
```
PORT: 4567
OTHER_CONFIG:
  secret1: "so_secret"
  secret2: "even_more_secret"

CONFIG:
  hostname: "some_hostname"
  port: "{{ PORT }}"
  secrets: "{{ OTHER_CONFIG }}"
```

If you output `CONFIG` to json or yaml, the port would get represented in the output as a
string instead of as a number, but secrets would get represented as a dictionary.  This is
a mis-match in behaviour where some "types" are retained and others are not.  This change
should fix the issue.

Update template test to also test var retainment.

Make the template changes in v2.
Update to only short-circuit for booleans and numbers.

Added an entry to the changelog.

Fix indentation

fixes #10591

removed folding sudo/su to become logic from constants as it is already present downstream in playbook/play/tasks

they could be caused by random character combinations, fixes #10468

dont break everything when one of the vars  in inject does not template correctly, wait till its used

Update README.md

I think since ansible and the ansible-modules have been splitted --recursive should be added

Make run_command() work when we get byte str with non-ascii characters (instead of unicode type like we were expecting)

Fix and test.

Fixes #10536