TPA-RFC-33: add time estimates to timeline titles (team#40755)

[Kaplan-Moss estimation technique]: https://jacobian.org/2021/may/25/my-estimation-technique/

## Phase A: emergency Icinga retirement

## Phase A: emergency Icinga retirement (4-6 weeks)

| Task                                 | Estimate | Uncertainty | Total (days) |

|--------------------------------------|----------|-------------|--------------|

| karma dashboard                      | 3 days   | moderate    | 4.5          |

| **Total**                            | 4 weeks  | moderate    | 27.5         |

## Phase B: merging servers, more exporters

## Phase B: merging servers, more exporters (5-9 weeks)

| Task                          | Estimate | Uncertainty | Total (days) | Note                           |

|-------------------------------|----------|-------------|--------------|--------------------------------|

| port NRPE checks to Fabric    | 2 weeks  | high        | 20           | could be broken down by check  |

| **Total**                     | 5 weeks  | ~high       | 45           |                                |

## Phase C: high availability, long term metrics, other exporters

## Phase C: high availability, long term metrics, other exporters (10-17 weeks)

| Task                  | Estimate  | Uncertainty | Total (days) | Note                 |

|-----------------------|-----------|-------------|--------------|----------------------|