openvpn: renew the sample keys

Renew the sample keys to fix the test issue:
WARNING: Your certificate has expired!

The renewed sample keys from [1] contain binary files which can't be patched
by quilt, so archive the files into sample-keys-renew-for-the-next-10-years.tar.gz.

[1] https://github.com/OpenVPN/openvpn/commit/98e70e7

Signed-off-by: Haixiao Yan <haixiao.yan.cn@windriver.com>
Signed-off-by: Armin Kuster <akuster808@gmail.com>

meta-networking/recipes-support/openvpn/openvpn_2.5.11.bb

@@ -11,6 +11,7 @@ SRC_URI = "http://swupdate.openvpn.org/community/releases/${BP}.tar.gz \
            file://openvpn \
            file://openvpn@.service \
            file://openvpn-volatile.conf \
+           file://sample-keys-renew-for-the-next-10-years.tar.gz \
            "
 
 UPSTREAM_CHECK_URI = "https://openvpn.net/community-downloads"