[#62448006] ensure example configs are loadable
[#62448006] ensure example configs are loadable

At the moment, this is of a small amount of value - it simply
ensures that the example YAML configs are valid YAML and load.

When combined with [#59505526] this should ensure that all examples
are up-to-date with our code.

gds-operations/vcloud-edge_gateway,gds-operations/vcloud-edge_gateway,gds-operations/vcloud-edge_gateway