Added arch ppc64le to run on power systems

[genisysram]

Hi Here is my contribution to your code, its working good on powersystems.

Thanks for the code, its working good.

What do these changes do?

Added Architecture "ppc64le"

Are there changes in behavior for the user?

No

Added Architecure ppc64le to run on Powersystem

[davidlehn]

• I think all the code here is arch independent. Is there a reason tests need to run on multiple archs? What kind of issues were you trying to check for? Endian issues?
• Are ppc64le test systems a limited resource that might cause test delays?
• Looks like it tried to build node 12 and timed out.
• Note we may also move over to GitHub actions at some point. I'm unsure what kind of architecture support they have.