fixes CC-445: log resetting cached client when higher verbosity is requested

https://jira.zenoss.com/browse/CC-445

DEMO:
```
# plu@plu-9: serviced pool list
ID		PARENT	PRI
default			0

# plu@plu-9: serviced pool remove junk
junk: pool not found

# plu@plu-9: serviced pool list
ID		PARENT	PRI
default			0
```