[MLGO] Fix make_corpus_script.test

This test is currently failing as the order that the files end up in the
corpus description is somewhat dependent upon platform and the check is
checking for a specific order. This patch switches to using the
CHECK-DAG directive to make the checks order invariant to fix the broken
bots.

Author: boomanaiden154

llvm/utils/mlgo-utils/tests/corpus/make_corpus_script.test

@@ -14,9 +14,9 @@
 ## Check that we get the expected command in the global command override
 # CHECK: "-test"
 # CHECK: "has_thinlto": false
-## Check that the modules are in the corpus description
-# CHECK: "test1"
-# CHECK: "test2"
+## Check that the modules are in the corpus description (order invariant)
+# CHECK-DAG: "test1"
+# CHECK-DAG: "test2"
 
 # RUN: ls %t.out.dir | FileCheck %s --check-prefix CHECK-DIR