selftest: Add test to verify junit xml report

Change-Id: I8cad02abe776cc00b513113dbaf3c948ea7956cd
diff --git a/selftest/report_test/report_test.ok.ign b/selftest/report_test/report_test.ok.ign
new file mode 100644
index 0000000..dcda3b6
--- /dev/null
+++ b/selftest/report_test/report_test.ok.ign
@@ -0,0 +1,3 @@
+/[^ ]*/selftest/	[PATH]/selftest/
+\.py:[0-9]*	.py:[LINENR]
+\([0-9.]+ sec\)	(N.N sec)