Improve x509xrite_csr testing: extensions, ECDSA
diff --git a/tests/data_files/server1.req.key_usage b/tests/data_files/server1.req.key_usage
new file mode 100644
index 0000000..053aed9
--- /dev/null
+++ b/tests/data_files/server1.req.key_usage
@@ -0,0 +1,17 @@
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