Fix: remove consumer health poll update on startup

With the TLS health state, the consumer thread has to register in order
to be validated during the health check so the poll update work around
is no longer needed andi replaced with a simple code update just after
the health registration of the thread.

This has been reported after the TLS feature ticket #411 has been
implemented.

Fixes #428

Signed-off-by: David Goulet <dgoulet@efficios.com>