During cloud init user might want to change default user from the
distribution to something else. It will not be possible to ssh to such
machine using boxpy ssh command - only using ssh directly with the
correct user name would be possible. In this change there is added
possibility for setting username in boxpy_data section with desired
value to be used in ssh command.
In case of Centos, there is a need to get the checksum file first to
figure out the correct image filename, during that process checksum file
was left alone in the current directory. Place it in the temp dir in the
first place and than remove after we know the right image filename.
Some systems have to have a strict control, even in system state
information. Prefixed with "sudo" to command to gather information how
cloud init is doing.
There were very similar methods for downloading/proceeding with
checksum for both Ubuntu and Fedora classes. Extracted those two into
methods in base class.
For now, the only mode VirtualBox VM has launched was headless. For
debugging purposes, there were other types allowed using --type switch
for command create and rebuild, while headless will remain the default
one.
Currently, you could pass long version of '--version' option to either
boxpy itself and subcommands create and rebuild. With this patch proper
context is now detected.
Till now, boxpy was based on the fact, that there was power_state
section, and there was a check if VM is down already. That approach have
their own issues.
Now, there will be no more power-off, there is a check by using
`cloud-init status` command through ssh.
Cleanup/destroy parts has needed some modification, so that there will
be no leftovers from cloud init ISO image.
And finally, there was some tweaks for user-data cloud-init part (mainly
for ssh handling), so that `cloud-init status` will not report phony
errors.
