Metadeploy runs _init_options twice

[yippie]

When publishing plans, each tasks _init_options ends up getting run twice.

The metadeploy_publish task appears to be running _init_options before upload and then saving the modified options as the options for each step on the new upload. Then, when a user runs a plan through Metadeploy, _init_options runs again, this time starting with the already modified options.

This becomes a big problem if _init_options ever modifies the option values provided in the original flow. This is currently breaking the retrieve_unpackaged task because it is overwriting the package_xml option which is supposed to have a file path, with the file content. This means Metadeploy attempts to retrieve a file from a completely non-sensical file path.