leak tests: mark all checkout-index tests as passing with SANITIZE=leak

Mark some tests that match "*{checkout,switch}*" 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).

Unfortunately almost all of those tests fail when compiled with
SANITIZE=leak, these only pass because they run "checkout-index", not
the main "checkout" command.

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

t/t2002-checkout-cache-u.sh

@@ -8,6 +8,7 @@ test_description='git checkout-index -u test.
 With -u flag, git checkout-index internally runs the equivalent of
 git update-index --refresh on the checked out entry.'
 
+TEST_PASSES_SANITIZE_LEAK=true
 . ./test-lib.sh
 
 test_expect_success \

t/t2003-checkout-cache-mkdir.sh

@@ -10,6 +10,7 @@ also verifies that such leading path may contain symlinks, unlike
 the GIT controlled paths.
 '
 
+TEST_PASSES_SANITIZE_LEAK=true
 . ./test-lib.sh
 
 test_expect_success 'setup' '

t/t2004-checkout-cache-temp.sh

@@ -8,6 +8,7 @@ test_description='git checkout-index --temp test.
 With --temp flag, git checkout-index writes to temporary merge files
 rather than the tracked path.'
 
+TEST_PASSES_SANITIZE_LEAK=true
 . ./test-lib.sh
 
 test_expect_success 'setup' '

t/t2005-checkout-index-symlinks.sh

@@ -8,6 +8,7 @@ test_description='git checkout-index on filesystem w/o symlinks test.
 This tests that git checkout-index creates a symbolic link as a plain
 file if core.symlinks is false.'
 
+TEST_PASSES_SANITIZE_LEAK=true
 . ./test-lib.sh
 
 test_expect_success \

t/t2081-parallel-checkout-collisions.sh

@@ -11,6 +11,7 @@ The tests in this file exercise parallel checkout's collision detection code in
 both these mechanics.
 "
 
+TEST_PASSES_SANITIZE_LEAK=true
 . ./test-lib.sh
 . "$TEST_DIRECTORY/lib-parallel-checkout.sh"