excess Error: messages in the logs, under normal operating conditions

[fosterseth]

Ever since #459, the log output shows a handful of error messages, even under normal conditions.

e.g.

ERROR 2021/12/06 15:53:25 Read error in control service: read unix /var/run/awx-receptor/receptor.sock->@: use of closed network connection

and

tools_receptor_1 | ERROR 2021/12/06 20:34:23 Read error in control service: Application error 0x0: normal close
tools_receptor_1 | INFO 2021/12/06 20:34:23 Client disconnected from control service awx_1:3NLfWPva
tools_receptor_1 | ERROR 2021/12/06 20:34:23 Read error in control service: Application error 0x0: normal close
tools_receptor_1 | INFO 2021/12/06 20:34:23 Client disconnected from control service awx_1:ot1yWhdj
tools_receptor_2 | ERROR 2021/12/06 20:34:23 Read error in control service: Application error 0x0: normal close
tools_receptor_2 | INFO 2021/12/06 20:34:23 Client disconnected from control service awx_1:JIeKbWgy
tools_receptor_2 | ERROR 2021/12/06 20:34:23 Read error in control service: Application error 0x0: normal close
tools_receptor_2 | INFO 2021/12/06 20:34:23 Client disconnected from control service awx_1:pg553aDk

we should find a way to better address this so that Error is more meaningful when we examine the logs

[ghjm]

For sure that "normal close" shouldn't be there

[shanemcd]

@fosterseth Should we backport this for 1.1?