Implement a method to 'fill in' gaps in the forecast data.

[rstrange-scottlogic]

Due to an issue our ETL scripts stopped capturing data for awhile.

This has left us with gaps in the data for certain dates. We would like a way to remedy this.

• This story only covers the forecast ETL script
• We will add a new configuration setting to drive how far back in the past we want to go (default to 7 days)
• The script checks the database for missing forecast_base_time values and retrieves any missing datasets

• Includes integration tests that the data is returned.

  Test Checklist:

• [x] Test Analysis & discussion with developer
• [x] Write Test Cases / Charters
• [x] Test Cases & Charters Reviewed
• [x] Test Cases Executed
• [x] Test Charters Executed
• [x] Regression tests executed
• [x] Automation Tests added to project

[Ben-EJ]

Test analysis: Integration test - to check if missing data is retrieved, only one is required. Create and execute a test charter