Murano fails to deploy - cannot check core library

Murano sometimes fails to deploy due to delay in haproxy
identifying started API services. Instead of waiting for all the
services and checking existance of core library via VIP deploy
task should connect to one of the services directly for testing
service status and for package import.

Change-Id: I2934579edc910e81730dd89dbd8ff9eb11a2cc1c
Closes-Bug: #1634531