Add cp command

New features:

• cp command allows transfer of files into and out of the machine

Bug fixes:

• NFS share names containing whitespace are now handled correctly.

Add status command

This release adds a status command to check if a machine is running or not.

Security improvements and bug fixes

Improvements:

• driver no longer runs as root; it drops privileges and spawns a privileged subcommand only for those operations that absolutely need root.
• additional restrictions on hyperkit binary
  • if a hyperkit file exists in the same directory as the driver, than that is the only allowed version
  • the hyperkit executable must be owned by root, or group ownership must be by wheel or admin
• nfsd will be updated via restart instead of update, which works even if /etc/exports did not yet exist.

Bug fixes and improvements 😊

New features:

• Added stop command.
• Added --hyperkit option to the start command to specify the location of the hyperkit executable.

Improvements:

• The delete command will delete the machine config even the machine cannot be stopped (e.g. because it wasn't running).
• Don't sleep for 30s before adding volume mounts; wait instead for SSH to become available.
• Don't display usage information when the command returns an error.
• Evaluate symlinks before exporting a directory via NFS.

First alpha release of the embedded control program

Set version and commit info when linking the binary

Signed-off-by: Jan Dubois <jan.dubois@suse.com>