Add explicit rspfile argument to RuleBuilderCommand.FlagWithRspFileInputList

Using $out.rsp as the rsp file adds extra complexity around keeping
the $ unescaped.  Make callers to FlagWithRspFileInputList provide
an explicit path for the rsp file instead.

Bug: 182612695
Test: rule_builder_test.go
Change-Id: I3f531d80c1efa8a9d09aac0a63790c5b11a9f0c6
diff --git a/android/test_suites.go b/android/test_suites.go
index 7ecb8d2..6b7b909 100644
--- a/android/test_suites.go
+++ b/android/test_suites.go
@@ -68,7 +68,7 @@
 		FlagWithOutput("-o ", outputFile).
 		FlagWithArg("-P ", "host/testcases").
 		FlagWithArg("-C ", testCasesDir.String()).
-		FlagWithRspFileInputList("-r ", installedPaths.Paths())
+		FlagWithRspFileInputList("-r ", outputFile.ReplaceExtension(ctx, "rsp"), installedPaths.Paths())
 	rule.Build("robolectric_tests_zip", "robolectric-tests.zip")
 
 	return outputFile