By Kate Abnett and Susanna Twidale BRUSSELS/LONDON (Reuters) – Fears of a Russian gas supply crunch prompted some European countries on Wednesday to ask people to consume less energy in a move that could potentially yield big results. Despite months of soaring energy prices and tight supplies most governments have avoided taking a step they fear could be unpopular but with concerns growing that Russia could turn off the taps, the message in some capitals is starting to shift. “Every kilowatt-hour counts,” German Economy Minister Robert Habeck said on Wednesday as Germany declared an “early war…