Adding plugin install provider

[yershalom]

Hi,

I'll add the install plugin provider.
The issue that I don't have so much time now, but i'll try to do it in the next couple of weeks.
You can put feature tag on this issue.

[catalinvr]

Hi @anuriq

I tried to create a new plugin resource. For the moment this is able to install plugins.

I tested it using the following code:

#./kibana-plugin install https://github.com/fbaligand/kibana-enhanced-table/releases/download/v0.2.0/enhanced-table-0.2.0_5.6.7.zip
kibana5_plugins 'enhanced-table' do
     install_type 'url'
     url 'https://github.com/fbaligand/kibana-enhanced-table/releases/download/v0.2.0/enhanced-table-0.2.0_5.6.7.zip'
end

Best,
Catalin