OPENPGPKEY RData presentaion is Base64.

Also add a test which has whitespace within the tested presentation.

Signed-off-by: James Cloos <cloos@jhcloos.com>
(cherry picked from commit ad24586)

Author: jhcloos

pdns/dnsrecords.cc

@@ -285,7 +285,7 @@ boilerplate_conv(TLSA, 52,
                  )                 
 
 boilerplate_conv(OPENPGPKEY, 61,
-                 conv.xfrHexBlob(d_keyring, true);
+                 conv.xfrBlob(d_keyring, true);
                  )
 
 #undef DS