REGTESTS: ssl: show_ssl_ocspresponce.vtc is broken with BoringSSL

The `show ssl ocsp-response` feature is not available with BoringSSL,
but we don't have a way to disable this feature only with boringSSL on
the CI. Disable the reg-test until we do.
diff --git a/reg-tests/ssl/show_ssl_ocspresponse.vtc b/reg-tests/ssl/show_ssl_ocspresponse.vtc
index 3aad6d8..b7a2d51 100644
--- a/reg-tests/ssl/show_ssl_ocspresponse.vtc
+++ b/reg-tests/ssl/show_ssl_ocspresponse.vtc
@@ -1,4 +1,5 @@
-#REGTEST_TYPE=devel
+#REGTEST_TYPE=broken
+# broken because it can't work with BoringSSL.
 
 # This reg-test uses the "show ssl ocsp-response" command to display the details
 # of the OCSP responses used by HAProxy.