redirect old docs to new

.gitlab-ci.yml

public/cloud/advanced-features/index.html

public/cloud/best-practices/index.html

public/cloud/cli/index.html

public/cloud/contribute/index.html

public/cloud/faq/index.html

public/cloud/flavors/index.html

public/cloud/network/index.html

public/cloud/news/index.html

public/cloud/putty/index.html

public/cloud/quick-start/index.html

public/cloud/register/index.html

public/cloud/terms-of-service/index.html

public/cloud/tools/index.html

public/cloud/windows/index.html

public/index.html