Workaround for https://github.com/fabric8io/fabric8/issues/650

Signed-off-by: Paulo Pires <pjpires@ubiwhere.com>
Remote OSGi service availability can no be set as MANDATORY.

Signed-off-by: Paulo Pires <pjpires@ubiwhere.com>
Updated instructions.

Signed-off-by: Paulo Pires <pjpires@ubiwhere.com>