Moves the content found in examples/advanced-gateways/ to
tasks/traffic-management/edge-traffic and
the content found in examples/multicluster/ to tasks/multicluster/
Fixes all broken links caused by the move and adds aliases to the moved pages.
The changes are applied to both, English and Chinese, websites.
Signed-off-by: rcaballeromx <grca@google.com>
Rigs Caballero