Comment 26 for bug 1567957

The priority changed to Critical for 9.0 because:
1. It is a regression issue
2. It affects all customers
3. we have fix on review which already merged to master
4. The user impact is the following:
a) Users can't work with fuel slave nodes using hostnames like 'ssh node-1', but we have a lot of documentation / screencasts where we use these hostnames
b) scripts for previous versions of fuel should be rewritten because of this regression issue
c) Some OSTF tests fail, example of related issue: https://bugs.launchpad.net/fuel/+bug/1592876