Starting with Nautilus 14.2.1 the dashboard SSL port is readed from <<mgr/dashboard/ssl_server_port>> ceph setting.
Previous versions use the port specified in <<mgr/dashboard/server_port>>

Addressed @travisn suggestion about use of <ssl> attribute in conditional.
This suggestion drove me to change the type of the SSl attribute (from *bool to bool) in the DashboardSpec Struct.
This makes code more clean/safe and make sure that the SSL atribute has always a meaningful value.

Now if you want to run the <secure dashboard> you need to set explicitly SSL to true, as is demonstrated in unit tests.

[x] Code generation (make codegen) has been run to update object specifications
Signed-off-by: Juan Miguel Olmo Martínez <jolmomar@redhat.com>