Don't recreate cloud-config if it exists (#791)
Don't recreate cloud-config if it exists (#791)

* Don't recreate cloud-config if it exists

Appending files does so in a random order. This causes a change to the
cloud-config which will cause all the ASG to get recreated. This is
undesired behavior so avoid changing cloud-config.

* only etcd nodes

* Use better test for etcd nodepool(s)

* Fix inverted logic

samsung-cnct/k2,samsung-cnct/k2,samsung-cnct/kraken-lib,leahnp/k2,samsung-cnct/kraken-lib,alejandroEsc/k2,yenicapotediaz/k2,samsung-cnct/kraken-lib,yenicapotediaz/k2,alejandroEsc/k2,leahnp/k2