"0x" throws an error if used on "pvt_key_for_metering"

[arturgontijo]

Using the v2.0.2 if I set the snetd.config.json like this:

...
"pvt_key_for_metering": "0x11111111111111111111111111111111111111111111111111111111111111",
...

snetd will not get the value as a private key, instead I had to set it like:

...
"pvt_key_for_metering": "11111111111111111111111111111111111111111111111111111111111111",
...

It would be great if snetd could accept both ways.

[arturgontijo]

More details:

The Daemon doesn't crash, but it doesn't respond the requests neither.
The service was "online" on dApp but always responding the Service Execution went wrong. Please try again error.

Daemon's logs:

time="2019-11-06T16:37:16.754035356Z" level=debug msg="New gRPC call received" context="{MD: map[sec-fetch-mode:[cors] user-agent:[Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/77.0.3865.120 Safari/537.36] :authority:[services-1.snet.sh:6406] snet-payment-channel-signature-bin:[...] origin:[https://beta.singularitynet.io] content-type:[application/grpc+proto] x-grpc-web:[1] accept-encoding:[gzip, deflate, br] sec-fetch-site:[cross-site] snet-payment-type:[free-call] content-length:[13074] accept-language:[en-US,en;q=0.9] snet-free-call-user-id:[artur@singularitynet.io] referer:[https://services-1.snet.sh:6406/] accept:[*/*] connection:[keep-alive] snet-current-block-number:[8884908]], Info: {/SemanticSegmentation/segment true true}"
time="2019-11-06T16:37:16.7541501Z" level=debug msg="Return payment handler by type" paymentType=free-call
time="2019-11-06T16:37:16.75427962Z" level=debug msg=payload payload="{\"type\":\"request\",\"registry_address_key\":\"0xdce9c76ccb881af94f7fb4fac94e4acc584fa9a5\",\"ethereum_json_rpc_endpoint\":\"https://mainnet.infura.io\",\"request_id\":\"bn1fdf6c50hun1ja7g0g\",\"input_data_size\":\"1581\",\"service_method\":\"/SemanticSegmentation/segment\",\"request_received_time\":\"2019-11-06 16:37:16.753992928\",\"organization_id\":\"snet\",\"service_id\":\"semantic-segmentation\",\"group_id\":\"EoFmN3nvaXpf6ew8jJbIPVghE5NXfYupFF7PkRmVyGQ=\",\"daemon_end_point\":\"\",\"version\":\"v2.0.2\",\"client_type\":\"\",\"user_details\":\"\",\"user_agent\":\"Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/77.0.3865.120 Safari/537.36\",\"channel_id\":\"\"}"
time="2019-11-06T16:37:16.754350086Z" level=error msg="invalid hex string"