oVirt test connection always failing

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We've been updating our servers to latest Vagrant and Vagrant-Ovirt4 on Ubuntu 20.04, and found it always failed:

$ vagrant up
Error connecting to the oVirt cluster endpoint: "wrong number of arguments (given 2, expected 0..1)"

The fix was to change the line (lib/vagrant-ovirt4/action/connect_ovirt.rb):

ovirt_connection.test(true, 30)

to

ovirt_connection.test(true)

Not sure why this is the case, as the API doc does indicate the code should have been fine: https://www.rubydoc.info/gems/ovirt-engine-sdk/OvirtSDK4%2FConnection:test -- perhaps the gem is still behind. Anyway, this might help someone else who comes across this.