reduce unnecessary logging about watching /servicevhosts

ISSUE - before template is deployed, too much unnecessary spam:
```
I1212 15:12:05.576849 04158 cpserver.go:366] Running registry.WatchChildren for zookeeper path: /servicevhosts
W1212 15:12:05.577526 04158 cpserver.go:369] will retry in 10 seconds to WatchChildren(/servicevhosts) due to error: coord-client: node does not exist
```