add options for Consul SSL enabled backends

[bitsofinfo]

Add options for Consul SSL enabled backends, these options should be available regardless of registrator strategy used

<property name="consul-ssl-enabled">true | false</property>
<property name="consul-ssl-server-cert-file-path">pathToCustomSelfSigned consul cert we want to trust</property>
<property name="consul-ssl-server-cert-base64">base64 encoded self-signed consul ssl certificate to trust</property>
<property name="consul-ssl-server-hostname-verify">true | false</property>

Update all examples/unit-tests