Fix some test failures when Configured with zlib

TLSProxy was failing if we are Configured with compression because it
doesn't support it. This fix simply switches compression off for the
purposes of the test.
Reviewed-by: NRichard Levitte <levitte@openssl.org>

util/TLSProxy/Proxy.pm

@@ -144,7 +144,8 @@ sub start
         open(STDOUT, ">", File::Spec->devnull())
             or die "Failed to redirect stdout";
         open(STDERR, ">&STDOUT");
-        my $execcmd = $self->execute." s_server -rev -engine ossltest -accept "
+        my $execcmd = $self->execute
+            ." s_server -no_comp -rev -engine ossltest -accept "
             .($self->server_port)
             ." -cert ".$self->cert." -naccept ".$self->serverconnects;
         if ($self->ciphers ne "") {