Merge pull request #7406 from scientificlinux/sl7

Update sl container for sl7 to current (build-date=20200204)

library/sl

@@ -8,7 +8,7 @@ Tags: 7, latest
 Architectures: amd64
 GitFetch: refs/heads/7
 Directory: sl7
-GitCommit: b875059814e34ceae1c53790e63318712e37aaa9
+GitCommit: 2e463581894b46ae7c1cf09ac920f6dc2dc9c25d
 
 # For the SL6 container
 Tags: 6