Fix /cluster/:node_id/stats/remoted and /cluster/:node_id/stats/analysisd API calls

[davidjiglesias]

Hello team,

This PR closes #470.

It fixes API calls GET /cluster/:node_id/stats/remoted and GET /cluster/:node_id/stats/analysisd so the call is appropriately distributed to the cluster nodes.

Mocha test results:

Cluster
    GET/cluster/nodes
(node:2755) Warning: Setting the NODE_TLS_REJECT_UNAUTHORIZED environment variable to '0' makes TLS connections and HTTPS requests insecure by disabling certificate verification.
      ✓ Request (265ms)
      ✓ Pagination (245ms)
      ✓ Retrieve all elements with limit=0 (252ms)
      ✓ Sort (249ms)
      ✓ Search (252ms)
      ✓ Select (251ms)
      ✓ Select 2 (253ms)
      ✓ Wrong select (255ms)
      ✓ Filters: type (263ms)
      ✓ Filters: query 1 (256ms)
      ✓ Filters: query 2 (256ms)
      ✓ Filters: invalid type (258ms)
    GET/cluster/:node_id/stats
      ✓ Cluster stats (249ms)
      ✓ Unexisting node stats (245ms)
      ✓ Analysisd stats (master) (249ms)
      ✓ Analysisd stats (worker-1) (251ms)
      ✓ Analysisd stats (257ms)
      ✓ Remoted stats (master) (250ms)
      ✓ Remoted stats (worker-1) (260ms)
      ✓ Remoted stats (worker-2) (251ms)
    GET/cluster/:node_id/logs
      ✓ Request (master) (266ms)
      ✓ Request (worker-1) (271ms)
      ✓ Request (worker-2) (269ms)
      ✓ Pagination (289ms)
      ✓ Sort (269ms)
      ✓ Search (263ms)
      ✓ Filters: type_log (261ms)
      ✓ Filters: category (253ms)
      ✓ Filters: query 1 (266ms)
      ✓ Filters: query 2 (273ms)
      ✓ Filters: query 3 (267ms)
      ✓ Filters: wrong query (78ms)
    GET/cluster/nodes/:node_name
      ✓ Request (258ms)
      ✓ Request wrong name (283ms)
    GET/cluster/status
      ✓ Request (255ms)
    GET/cluster/config
      ✓ Request (252ms)
    GET/cluster/healthcheck
      ✓ Request (288ms)
      ✓ Filter: node name (269ms)
    POST/cluster/:node_id/files
      ✓ Upload ossec.conf (master) (256ms)
      ✓ Upload ossec.conf (worker) (277ms)
      ✓ Upload new rules (268ms)
      ✓ Upload rules (overwrite=true) (261ms)
      ✓ Upload rules (overwrite=false) (253ms)
      ✓ Upload new decoder (247ms)
      ✓ Upload decoder (overwrite=true) (247ms)
      ✓ Upload decoder (without overwrite parameter) (271ms)
      ✓ Upload new list (266ms)
      ✓ Upload list (overwrite=true) (247ms)
      ✓ Upload list (overwrite=false) (259ms)
      ✓ Upload corrupted ossec.conf (master) (89ms)
      ✓ Upload corrupted ossec.conf (worker) (96ms)
      ✓ Upload malformed rules (83ms)
      ✓ Upload rules to unexisting node (261ms)
      ✓ Upload malformed decoder (80ms)
      ✓ Upload decoder to unexisting node (244ms)
      ✓ Upload malformed list (90ms)
      ✓ Upload list to unexisting node (286ms)
      ✓ Upload list with empty path (83ms)
      ✓ Upload a file with a wrong content type (87ms)
    GET/cluster/:node_id/files
      ✓ Request ossec.conf (master) (256ms)
      ✓ Request ossec.conf (worker) (263ms)
      ✓ Request rules (local) (251ms)
      ✓ Request rules (global) (250ms)
      ✓ Request decoders (local) (246ms)
      ✓ Request decoders (global) (242ms)
      ✓ Request lists (244ms)
      ✓ Request wrong path 1 (76ms)
      ✓ Request wrong path 2 (95ms)
      ✓ Request wrong path 3 (106ms)
      ✓ Request unexisting file (253ms)
      ✓ Request file from unexisting node (244ms)
      ✓ Request file with empty path (78ms)
      ✓ Request file with validation parameter (true) (265ms)
    GET/cluster/:node_id/configuration/validation (manager and worker OK)
      ✓ Request validation (master) (704ms)
      ✓ Request validation (worker) (693ms)
      ✓ Request validation (all nodes) (751ms)
    GET/cluster/:node_id/configuration/validation (manager KO, worker OK)
      ✓ Request validation (master) (245ms)
      ✓ Request validation (worker) (669ms)
      ✓ Request validation (all nodes) (716ms)
    GET/cluster/:node_id/configuration/validation (manager OK, worker KO)
      ✓ Request validation (master) (683ms)
      ✓ Request validation (worker) (257ms)
      ✓ Request validation (all nodes) (721ms)
    GET/cluster/:node_id/configuration/validation (manager and worker KO)
      ✓ Request validation (master) (252ms)
      ✓ Request validation (worker) (259ms)
      ✓ Request validation (all nodes) (262ms)
    DELETE/cluster/:node_id/files
      ✓ Delete rules (master) (244ms)
      ✓ Delete decoders (master) (242ms)
      ✓ Delete CDB list (master) (240ms)
      ✓ Delete file with empty path (77ms)
    GET/cluster/master/config/:component/:configuration
      ✓ Request-Agentless-Agentless (253ms)
      ✓ Request-Analysis-Global (253ms)
      ✓ Request-Analysis-Active-response (243ms)
      ✓ Request-Analysis-Alerts (251ms)
      ✓ Request-Analysis-Command (245ms)
      ✓ Request-Analysis-Internal (261ms)
      ✓ Request-Auth-Auth (267ms)
      ✓ Request-Com-Active-response (250ms)
      ✓ Request-Com-Internal (264ms)
      ✓ Request-Csyslog-Csyslog (249ms)
      ✓ Request-Integrator-Integration (243ms)
      ✓ Request-Logcollector-Localfile (247ms)
      ✓ Request-Logcollector-Socket (250ms)
      ✓ Request-Logcollector-Internal (252ms)
      ✓ Request-Mail-Global (246ms)
      ✓ Request-Mail-Alerts (245ms)
      ✓ Request-Mail-Internal (246ms)
      ✓ Request-Monitor-Internal (265ms)
      ✓ Request-Request-Remote (248ms)
      ✓ Request-Request-Internal (256ms)
      ✓ Request-Syscheck-Syscheck (246ms)
      ✓ Request-Syscheck-Rootcheck (249ms)
      ✓ Request-Syscheck-Internal (251ms)
      ✓ Request-Wmodules-Wmodules (270ms)
    PUT/cluster/:node_id/restart
      ✓ Request (worker) (253ms)
      ✓ Request (master) (257ms)


  115 passing (34s)

[crd1985]

Update the CHANGES.md