leak tests: mark all ls-tree tests as passing with SANITIZE=leak

Mark those tests that match "*ls-tree*" as passing when git is
compiled with SANITIZE=leak. They'll now be listed as running under
the "GIT_TEST_PASSING_SANITIZE_LEAK=true" test mode (the "linux-leaks"
CI target).

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

t/t3100-ls-tree-restrict.sh

@@ -16,6 +16,8 @@ This test runs git ls-tree with the following in a tree.
 The new path restriction code should do the right thing for path2 and
 path2/baz.  Also path0/ should snow nothing.
 '
+
+TEST_PASSES_SANITIZE_LEAK=true
 . ./test-lib.sh
 
 test_expect_success \

t/t3101-ls-tree-dirname.sh

@@ -19,6 +19,8 @@ This test runs git ls-tree with the following in a tree.
 Test the handling of multiple directories which have matching file
 entries.  Also test odd filename and missing entries handling.
 '
+
+TEST_PASSES_SANITIZE_LEAK=true
 . ./test-lib.sh
 
 test_expect_success 'setup' '

t/t3102-ls-tree-wildcards.sh

@@ -2,6 +2,7 @@
 
 test_description='ls-tree with(out) globs'
 
+TEST_PASSES_SANITIZE_LEAK=true
 . ./test-lib.sh
 
 test_expect_success 'setup' '

t/t3103-ls-tree-misc.sh

@@ -7,6 +7,7 @@ Miscellaneous tests for git ls-tree.
 
 '
 
+TEST_PASSES_SANITIZE_LEAK=true
 . ./test-lib.sh
 
 test_expect_success 'setup' '