MANOPD-84031 Input files encoding rework and non-ASCII upload

[ilia1243]

Description

There are many places in KubeMarine where there can be an attempt to upload non-ASCII characters. This does not work because of issue paramiko/paramiko#1133
The problem is especially relevant for custom template plugins.

Fixes #342

Solution

• NodeGroup.put now uploads data only as stream of bytes, not characters.
• New requirement for all input text files to be strictly in utf-8 encoding.
  • This is reflected in new utils.py methods which now always open in utf-8.
  • Any internal or external text file should be opened using new methods.
• New approach automatically leads to CRLF -> LF transformation of line endings on Windows deployer for any input text file (internal or external) except external config files for plugins with do_render=False.
• Removed binary parameter for thirdparties as uploading from filesystem is not supported for external thirdparties.
• Minor fix in services.packages.package_manager.repositories: now it allows input as path to file for both apt and yum package managers.

Breaking changes

If services.packages.package_manager.repositories for Debian-based cluster was passed as string, it will stop working as the string is now considered as path to file. No longer working configuration:

services:
  packages:
    package_manager:
      repositories: |
        deb http://archive.ubuntu.com/ubuntu focal main restricted
        deb http://archive.ubuntu.com/ubuntu focal-updates main restricted

New working configuration:

services:
  packages:
    package_manager:
      repositories: files/predefined.list

where files/predefined.list contains the repositories.

Test Cases

See #342

Checklist

• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• Integration CI passed
• Unit tests. If Yes list of new/changed tests with brief description
• There is no merge conflicts

Unit tests

test_demo.py and demo.py to adopt to new upload behaviour.

[shmo1218]

The doc review is done.

[koryaga]

@alku89 pls note about Breaking changes