'onSuccess' parameter is not working on slack processor

[educlos]

Describe the bug
When assigning the slack processor to a job, it will send a slack message on both success and failure regardless of the onSuccess parameter (I tested with it absent, set to false, or "false")

To Reproduce

• Define the slack team on the dkron servers
• Add the following on the job definition:

  "processors": {
    "slack": {
      "team": "slack",
      "channel": "#bot-testing"
    }
  },

• Run the job

Expected behavior
A message is sent on slack only on failure, as defined on the documentation

Specifications:

• OS: ubuntu (18 for the servers, 16 for the agents)
• Version 3.0.0 (pro)
• 3 nodes as server, few as agents

[educlos]

This issue got fixed in dkron-pro v3.0.1