Added SHA256 test certificates
With SHA-1 deprecation, we need a few certificates using algorithms in
the default support list. Most tests still use SHA-1 though.
The generation process for the new certificates is recorded in the makefile.
diff --git a/tests/data_files/cli-rsa-sha256.crt b/tests/data_files/cli-rsa-sha256.crt
new file mode 100644
index 0000000..a0fc11e
--- /dev/null
+++ b/tests/data_files/cli-rsa-sha256.crt
@@ -0,0 +1,21 @@
+-----BEGIN CERTIFICATE-----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+iCEaMMbG+VQLKNvuC63kmw/Zewc9ThM6Pa1Hcy0axT0faf1B/U01j0FIcw/6mTfK
+D8w48OIwc1yr0JtutCVjig5DC0yznGMt32RyseOLcUe+lfq005v2PAiCozr5X8rE
+ofGZpiM2NqRPePgYy+Vc75Zk28xkRQq1ncprgQb3S4vTsZdScpM9hLf+eMlrgqlj
+c5PLSkXBeLE5+fedkyfTaLxxQlgCpuoOhKBm04/R1pWNzUHyqagjO9Q=
+-----END CERTIFICATE-----