FQDN for SDP LeafNode devices

The FQDNs of all the TMC low devices are updated to comply with ADR-9

Previous FQDN	Updated FQDN
ska_mid/tm_leaf_node/sdp_subarray01	mid-tmc/subarray-leaf-node-sdp/01
ska_low/tm_leaf_node/sdp_subarray01	low-tmc/subarray-leaf-node-sdp/01