Removed PR #41531 and added Xcom and Host DNS mapping support to Swarm Operator

[spoutin]

• removed PR Add retrieve output docker swarm operator #41531 since it doesn't work on a mutli node environment since inspect_container from the docker sdk will not work if the docker container did run on the node which call the api. This results in a container not found error preventing the Operator from running. The code was since been removed since there is no way to guarantee the placement of the docker container.

• adding Xcom support for docker logs. If do_xcom_push is true (default) the last line of the docker logs will be push to the xcom results. If xcom_all is set to true, all results will be push to xcom.

• adding support for host dns mapping

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[potiuk]

Could you please split this PR - revertion of the original PR should be done with git revert and then the two changes should also be separated out - each with unit tests.

[spoutin]

@potiuk I'm not sure I can do a git revert since in the latest commits it looks like the provides directory was moved. There is no commit history on the docker_swarm.py and docker.py files.

[potiuk]

@potiuk I'm not sure I can do a git revert since in the latest commits it looks like the provides directory was moved. There is no commit history on the docker_swarm.py and docker.py files.

I see. - still splitting it would be great.