Parsoid: Move to service::node
As of I41265ecd955259f29af0fc84a53a0af489a8ec79 and
I84d47a2cacb8bacaa653c689028111645f536c1f, Parsoid is using
service-runner as its underlying service-management library. This allows
us to consolidate the Puppet manifests for it and use the service::node
define to manage it in production.
Note that the old role and class manifests have been preserved at this
time. They should be cleaned up in a separate effort.
Bug: T90668
Change-Id: I3f4a56964c5af9d2e7321b72a30426ef54712324