Jira Integration: Add project_override similar to slack's channel_override

[ivankovnatsky]

Is your feature request related to a problem?

I think it's more or less self explanatory, but to reiterate, we want to route the Jira issue creation into specific team's Jira projects.

Describe the solution you'd like

Similar to what slack sink has with it's channel_override.

Describe alternatives you've considered

Create separate Jira project and issue type for specific robusta jira alerts.

Additional context

Consider this config example:

clusterName: 
sinksConfig:
  - robusta_sink:
      name: robusta_ui_sink
      token: 
  - slack_sink:
      name: prod_infra_alerts
      slack_channel: 
      channel_override: "${labels.app.owner}-prod"
      api_key: 
      match:
        severity: [LOW, MEDIUM, HIGH]
...
  - jira_sink:
      name: 
      url: 
      username: 
      api_key: 
      dedups:
        - fingerprint
      project_override: "${labels.app.jira_project}"
      issue_type: 
      priority_mapping:
        HIGH: "High"
        MEDIUM: "Medium"
        LOW: "Low"
        INFO: "Lowest"
      match:
        severity: [LOW, MEDIUM, HIGH]
...

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