Enable uploading generated invoice to S3

[knikolla]

Introduces the options

• --upload-to-s3 which will upload the generated CSV from coldfront calculate_storage_gb_hours.
• --s3-endpoint-url and --s3-bucket to configure the destination S3 compatible store and bucket.
• --invoice-month which defaults to the month of the start date. This replaces the first column which was Interval.

Additionally

• Provides default for --start -> yesterday
• Provides default for --end -> today

Requires setting the environment variables

• S3_INVOICING_ACCESS_KEY_ID
• S3_INVOICING_SECRET_ACCESS_KEY

It will upload two copies of the invoice using the below format (one for archiving and timestamped and one as a working copy)

/Invoices//Service Invoices/ .csv /Invoices//Archive/ .csv

Where Timestamp is the time at generation using the ISO8601 format and without any special characters. See example below.

For example, for November 2023.

/Invoices/2023-11/Service Invoices/NERC OpenStack 2023-11.csv /Invoices/2023-11/Service Invoices/NERC OpenShift 2023-11.csv /Invoices/2023-11/Service Invoices/NERC Storage 2023-11.csv /Invoices/2023-11/Archive/NERC OpenStack 2023-11 20231218T201706Z.csv /Invoices/2023-11/Archive/NERC OpenShift 2023-11 20231218T201706Z.csv /Invoices/2023-11/Archive/NERC Storage 2023-11 20231218T201706Z.csv

Tooling for OpenStack and OpenShift invoicing is already able to upload files using the above described conventions.