[client] Add default period when missing a specific config (#75)

[antoinemzs]

Proposed changes

• Add a default 60 seconds period for when configuration does not provide explicit period

Related issues

• Contributes to Refactor code to update expectations to avoid "string typing" and code repetition collectors#75

Checklist

• I consider the submitted work as finished
• I tested the code for its functionality
• I wrote test cases for the relevant uses case
• I added/update the relevant documentation (either on github or on notion)
• Where necessary I refactored code to improve the overall quality
• For bug fix -> I implemented a test that covers the bug