Bazel: Automatically format build file with buildifier 0.20.0

Version 0.20.0 of buildifier has a lint mode that can fix the
formatting issues automatically:

  buildifier --lint=fix

Apply this to BUILD files.

Change-Id: I1120a0f15771d0bbea4daa34037be0b860385389
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>

org.eclipse.jgit.lfs.test/BUILD

@@ -1,10 +1,10 @@
-package(default_visibility = ["//visibility:public"])
-
 load(
     "@com_googlesource_gerrit_bazlets//tools:junit.bzl",
     "junit_tests",
 )
 
+package(default_visibility = ["//visibility:public"])
+
 junit_tests(
     name = "lfs",
     srcs = glob(["tst/**/*.java"]),

org.eclipse.jgit.test/BUILD

@@ -1,8 +1,8 @@
-load(":tests.bzl", "tests")
 load(
     "@com_googlesource_gerrit_bazlets//tools:genrule2.bzl",
     "genrule2",
 )
+load(":tests.bzl", "tests")
 
 PKG = "tst/org/eclipse/jgit/"