Silence lfs git tests

Author: cgarling

test/runtests.jl

@@ -40,9 +40,9 @@ end
         rname = "repo-with-large-file-storage"
         @test !isdir(rname)
         @test !isfile(joinpath(rname, "LargeFile.zip"))
-        run(`$(git()) clone https://github.com/Apress/repo-with-large-file-storage`)
-        run(`$(git()) -C $rname lfs install --local`)
-        run(`$(git()) -C $rname lfs pull`)
+        run(`$(git()) clone --quiet https://github.com/Apress/repo-with-large-file-storage`)
+        run(pipeline(`$(git()) -C $rname lfs install --local`; stdout=devnull))
+        run(pipeline(`$(git()) -C $rname lfs pull`; stdout=devnull))
         @test isdir(rname)
         @test isfile(joinpath(rname, "LargeFile.zip"))
         # Test filesize to make sure we got real file and not small LFS pointer file