Mark these tests as requiring use of the shell.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@143150 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/Index/crash-recovery-code-complete.c b/test/Index/crash-recovery-code-complete.c
index f001578..dde90bc 100644
--- a/test/Index/crash-recovery-code-complete.c
+++ b/test/Index/crash-recovery-code-complete.c
@@ -7,5 +7,6 @@
 // CHECK-CODE-COMPLETE-CRASH: Unable to perform code completion!
 //
 // REQUIRES: crash-recovery
+// REQUIRES: shell
 
 #warning parsing original file