Per summary, if one adds a new OSP provider (or changes creds on an existing one), and the provided user has access to many Projects, CFME attempts to log in to each of them. The low level doesn't seem to fail, but the UI times out. This makes the provider configuration page unable to save.
Can you give a sense of how many projects the OSP provider has?
Client reports 173.
I've put together a patch that cuts out the numerous excessive requests to all the projects. This dramatically speeds up verification and should prevent the UI timeout. https://github.com/ManageIQ/manageiq-providers-openstack/pull/60
We discovered a problem that makes the solution in https://github.com/ManageIQ/manageiq-providers-openstack/pull/60 unsuitable. Mainn's got a better solution in https://github.com/ManageIQ/manageiq-providers-openstack/pull/62
Verified ======== CFME 5.9.0.17 on RHOS 10