Add body as data-container on pipeline graph tooltip

## What does this MR do?
Fixed data tooltip getting cut off

## What are the relevant issue numbers?
Closes #21070 

## Screenshots (if relevant)
![Screen_Shot_2016-08-23_at_8.45.42_AM](/uploads/87f072cfc2fdeced6161db6bec46320a/Screen_Shot_2016-08-23_at_8.45.42_AM.png)

See merge request !5955