Replacing get_vnc_console with get_remote_console after microversion 2.6

The compute os-getVNCConsole Action API is deprecated from the
Microversion 2.5, so we should change to use the new remote-consoles API
from Microversion 2.6

ref: https://developer.openstack.org/api-ref/compute/#get-vnc-console-os-getvncconsole-action-deprecated

Implements blueprint: clear-deprecated-api

Change-Id: Iecba937a25f52b5a35eb523d9da069408fd5dc6b
2 files changed