run.sh: Listen anywhere if SOTA_CLIENT_ADDR is not set
run.sh: Listen anywhere if SOTA_CLIENT_ADDR is not set

Force sota_client to listen anywhere instead of
on the possibly unknown host sota-client if
SOTA_CLIENT_ADDR is not set.

Signed-off-by: Leon Anavi <15d13d7e2c6115f28df053122512bfcb5eb2dbf7@konsulko.com>

advancedtelematic/rvi_sota_client,PDXostc/rvi_sota_client,advancedtelematic/rvi_sota_client,PDXostc/rvi_sota_client