Network Dashboard improvements and bug fixing

[simonebruzzechesse]

• add explicit requirements for Python version at least 3.9
• add constraint on Shared VPC service projects and host project to both be in the monitoring scope
• fix issue with itertools.groupby which assumes the iterator to be already sorted when grouping by keys

The latter issue was causing duplicated metric to be written on Cloud Monitoring resulting in the following error:

One or more TimeSeries could not be written: One or more points were written more frequently than the maximum sampling period configured for the metric

[ludoo]

I don't know what you're changing with the groupings, but I trust you :)

[juliocc]

@simonebruzzechesse I'm trying to target Python 3.10 for everything in the repo. Would that make sense for you?

[simonebruzzechesse]

@simonebruzzechesse I'm trying to target Python 3.10 for everything in the repo. Would that make sense for you?

Sure! Function code works with Python 3.10 (tested both locally and on CF), should I explicitly pin the required version in README or is it fine >= 3.10?

[juliocc]

@simonebruzzechesse I'm trying to target Python 3.10 for everything in the repo. Would that make sense for you?

Sure! Function code works with Python 3.10 (tested both locally and on CF), should I explicitly pin the required version in README or is it fine >= 3.10?

>= 3.10 sounds good, but whatever you prefer.