fix plugin installation, bump to 1.0.4

[erulabs]

Fixes #382

[erulabs]

Note that I think this might only be broken for ES 2.0beta. It seems like "plugin -i" used to work. In ES2.0beta it's ONLY "plugin install" that works properly.

[martinb3]

Hi @erulabs! Could you try the 2.0.0_wip branch on this repo? I think it should already address this particular issue. Thanks!

[erulabs]

Heya - the 2.0.0_wip branch looks great, thanks! However, it still fails to install any plugins - because "-install" is not a command :)

[martinb3]

Hi @erulabs -- that part has been removed, and it should be running install, not -install: https://github.com/elastic/cookbook-elasticsearch/blob/2.0.0_wip/libraries/provider_plugin.rb#L44 Can you verify you're running that branch I'm linking to? Maybe needs a berks update to get a newer commit on the branch?

[chris-flite]

Thanks for this PR.
This fix would be great to have in a release on supermarket.
Working around by using execs to install plugins, looks funny.

[martinb3]

@chris-flite Have you tried the 2.0.0_wip branch? This has already been fixed there and we've gotten only positive feedback so far.