Cached Consul Node Id

[MatthiasScholz]

This issue is similar to this one: #25.

The data cached by consul is backed into a snapshot and hence reused when the snapshot get instantiated a second time.

[MatthiasScholz]

This need to be discussed in the terraform-aws-consul modul since the consul setup is used from the associated module.

[MatthiasScholz]

Change request was denied - it is not intended to use snapshots this way.
-> Rollback of #25 should be done.