Deploy hugo on with existing domain on a specific locationpath

Allow deployment on another domain in the cluster and with a locationpath set.

Example:

hugo(
  appName: 'chat-service-website',
  productionDomain: 'chat-staging.eclipse.org',
  deployment: [
    locationPath: "/docs",
    domain: "docs.chat.eclipse.org"
  ]
)

Signed-off-by: sebastien.heurtematte sebastien.heurtematte@eclipse-foundation.org