Description of problem:
The metrics graphs of VMs are rendered incorrectly, i.e. the axis lines are not displayed, the axis description is truncated

Version-Release number of selected component (if applicable):
4.12

How reproducible:
ALways

Steps to Reproduce:
1. Use Firefox and access cnv2
2. Look at a VM's metrics, compared to the launcher pod's metrics.
3.

Actual results:
Graphs are rendered differently.
VM graphs seem to be broken

Expected results:
VM graphs are rendered as nicely as pod graphs.

Additional info:
The attached screenshot shows the good pod and bad vm graphs.