Fleet Agent Policy Export Import

[anmironov]

Describe the enhancement:
Make possible to export Fleet Agent Policy with Integration or only the integrations and import to another cluster.

Describe a specific use case for the enhancement or feature:
existing Cluster A copy settings to existing Cluster B.
Indices cannot be copied because Cluster B has already some settings there.

[elasticmachine]

Pinging @elastic/fleet (Team:Fleet)

[ph]

@jen-huang fyi

[GeorgeGkinis]

We also need this.

We use ECK and defining a policy under xpack.fleet.agentPolicies is really a pain.
It would be awesome to be able to define and trounleshoot our policies in kibana and then be able to export the policy in the format expected by xpack.fleet.agentPolicies.

The output of the "view policy" action is not compatible.

[GeorgeGkinis]

Also by trying out the Fleet API I see that the output of GET /agent_policies/{agentPolicyId}/full is not even compatible with the input of PUT /agent_policies/{agentPolicyId} or POST /agent_policies/{agentPolicyId}

It would be great if the GET /agent_policies/{agentPolicyId}/full could accept additional query parameters besides "download","standalone" and "kubernettes":

• "kibana" : Format compatible with the xpack.fleet.agentPolicies setting
• "export" : Format compatible with the PUT /agent_policies/{agentPolicyId} and POST /agent_policies/{agentPolicyId} endpoints.

[GeorgeGkinis]

If I am not mistaken Elastic is working on this: #155044 and this: #140961