snap_alias: using CmdRunner (#5486)
* snap_alias: using CmdRunner
* add changelog fragment
* fix changelog fragment
* invert order of initialization in __init_module__()
* comment extra changed=True from code
* add extra info when verbose
* add extra info when verbose - fix blank line
* handle check_mode the old way
* fix logical test
* fix error when using multiple aliases
* fix error when using multiple aliases, part 2
* revert to using check_mode_skip=True again
(cherry picked from commit 4caa6574de)
Co-authored-by: Alexei Znamensky <103110+russoz@users.noreply.github.com>
