net/gscloud: update 0.4.0 to 0.5.0
FEATURES: * Add a `gscloud template rm` command; * Add basic support for IP addresses; * Add support for storage resize. FIXES: * Weird nesting of JSON output. https://github.com/gridscale/gscloud/blob/v0.5.0/CHANGELOG.md
Sponsored by: gridscale GmbH