REGTEST: ssl: mark reg-tests/ssl/ssl_crt-list_filters.vtc as broken

This regtest requires a version of OpenSSL which supports the
ClientHello callback which is only the case of recents SSL libraries
(openssl 1.1.1).

This was reported in issue #944.
diff --git a/reg-tests/ssl/ssl_crt-list_filters.vtc b/reg-tests/ssl/ssl_crt-list_filters.vtc
index e92ae02..a5ba189 100644
--- a/reg-tests/ssl/ssl_crt-list_filters.vtc
+++ b/reg-tests/ssl/ssl_crt-list_filters.vtc
@@ -1,4 +1,4 @@
-#REGTEST_TYPE=bug
+#REGTEST_TYPE=broken
 varnishtest "Test for the bug #810 and #818"
 # This test checks if the multiple certificate types works correctly with the
 # SNI, and that the negative filters are correctly excluded