fix: agent-node-files by append agentNode.HookActions

[huapox]

Fix #1527

with tests:

#conf
  - description: 'registry.local-ca.pem'
    source: certs/registry/registry.local-ca.pem
    destination: /etc/ssl/certs/registry.local-ca.pem
    nodeFilters: 
    - "agent:0-1"
    - "server:*"

#traceLog
TRAC[0000] Filtered 1 nodes (filter: [server:*])        
TRAC[0000] Filtered 1 nodes (filter: [server:*])        
TRAC[0000] Filtered 3 nodes (filter: [agent:0-1 server:*])

#validate
root @ deb1013 in ~ |11:27:14  
$ docker exec -it k3d-mycluster-agent-1 sh
~ # find /etc/ssl/certs/
/etc/ssl/certs/
/etc/ssl/certs/ca-certificates.crt
/etc/ssl/certs/registry.local-ca.pem

[huapox]

@iwilltry42 Review Pleased