Made the xrootd cache prefetch variable configurable via a pelican va…

[turetske]

…riable.

Added the Pelican variable Cache.Prefetch and used it to set the cache prefix value in the cache Changed its default from 20 to 0
Updated the xrootd config and cache templates accordingly

[jhiemstrawisc]

…riable.

Added the Pelican variabled Cache.Prefix and used it to set the cache prefix value in the cache Changed its default from 20 to 0 Updated the xrootd config and cache templates accordingly

Just clarifying before I review, is this supposed to be Cache.Prefix like the description claims or Cache.Prefetch like the title claims?

[turetske]

…riable.
Added the Pelican variabled Cache.Prefix and used it to set the cache prefix value in the cache Changed its default from 20 to 0 Updated the xrootd config and cache templates accordingly

Just clarifying before I review, is this supposed to be Cache.Prefix like the description claims or Cache.Prefetch like the title claims?

Prefetch, I had just been dealing with a lot of Prefix stuff and the typo just came out.

I recommend waiting until I can fix the test failures, though.

[jhiemstrawisc]

LGTM. I'll approve pending the failing ubuntu tests (not sure if this is a known flaky test or not).