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The NetworkManager package used to ship the symlink:

/usr/lib/systemd/system/network-online.target.wants/NetworkManager-wait-online.service

and this enabled NetworkManager-wait-online unconditionally. The only
way to disable it was by masking the service, and after that there
were still warnings about missing dependencies.

Now NetworkManager no longer ships that symlink (so that the service
can be disabled) and relies on the system preset. Therefore the
NetworkManager-wait-online service should be enabled by default to
preserve behavior, as done in Fedora [1]. For more information
see [2]. Thanks.

[1] https://pagure.io/fedora-release/pull-request/106
[2] https://bugzilla.redhat.com/show_bug.cgi?id=1455704

*** This bug has been marked as a duplicate of bug 1540243 ***