Make the remote shell's file operations robust
I.e. don’t depend on quoting hacks + echo + cat + IO redirection in
the shell for file operations (which makes binary data ugly business).
We already have a command type, currently call and spawn, which we
could extend with read, write, append with different parameters
like path and data (for writes only).
Feature Branch: test/11887-remote-shell-file-operations
Related issues
- Blocks #11888
- Blocks #12059 (closed)
Original created by @anonym on 11887 (Redmine)