Since the release of capybara 2.13.0, the following test fails on develop:

ComputeResourceIntegrationTest#test_0003_compute resource password doesn't deleted while test connection [/home/dcleal/code/foreman/foreman/test/integration/compute_resource_test.rb:23]:
Expected: "123456" 
  Actual: nil

It passes under 2.12.1. It appears to rely upon editing a disabled password field, which is probably the fault, as the value of the field isn't updated when it's filled.