Proxy: status call bugs

[raladev]

• when lnd is locked /api/v1/status displays grpc err instead of Lnd is locked status
  Screenshot from 2020-10-09 17-45-20

• when xud container was removed and created again, xud-api got correct status only after several minutes (i checked /api/v1/status directly too).

Steps:

1. create xud, unlock xud
2. check ready status
3. docker rm -f simnet_xud_1
4. bash xud.sh
5. unlock xud
6. check status api for current status

After xud creation, I had time to unlock xud, whirl on a chair, check getbalance, chech getinfo, check cli status, drink a water, and only after that i got actual status from api.

Screenshot from 2020-10-09 18-09-05

• change grpc err to 'Starting...' status when xud is starting - https://gofile.io/d/PVJJ4p