Node Summary Dashboard: Add pt-summary output

Problem:  we missing big part from pmm1  - when we were able to see results on pm-summary  output  (the tool form Percona toolkit) on PMM UI

This tool provides a lot of useful information regarding the system and parameters. We need to add this feature back 

UI:  we are not looking to repeated pmm1 flow and have a separate page for it, this should be on the Node dashboard.

 see pic:

User Stories: 

• As a PMM user, I need to be able to see the pt-summary output on Node Dashboard when Node selected, so that will provide me information about the node
• As a Percona Support  person, I need to be able to see  information from the pt-summary panel on Snapshot user uploaded  to our server, so that  I have full information about user system