Fix invalid call apt-get update in TPE Dockerfile
Fix invalid call apt-get update in TPE Dockerfile

telstra/open-kilda,telstra/open-kilda,jonvestal/open-kilda,jonvestal/open-kilda,telstra/open-kilda,jonvestal/open-kilda,telstra/open-kilda,jonvestal/open-kilda,telstra/open-kilda,telstra/open-kilda,telstra/open-kilda,jonvestal/open-kilda