Description of problem:
The notification after deleting nodes is blocking you from registering new nodes.


Version-Release number of selected component (if applicable):
openstack-tripleo-ui-2.0.1-0.20170126144317.f3bd97e.el7ost.noarch


How reproducible:
randomly


Steps to Reproduce:
1. Delete all the nodes
2. Open the register nodes dialog
3. Click "Add New"


Actual results:
The button doesn't respond and you can't register a new node. You see this exception in the console:

invariant.js:44 Uncaught Invariant Violation: Objects are not valid as a React child (found: [object XMLHttpRequest]). If you meant to render a collection of children, use an array instead or wrap the object using createFragment(object) from the React add-ons. Check the render method of `Notification`.


Additional info:
F5 after delete nodes works around this, but this is a blocker for the automation.