Improvements for showing onboarded projects

[majamassarini]

• Increase the timeout when collecting usage statistics
• Cache the result of get_onboarded_projects
• Collect statistics every hour -> should help with caching data in all the pods where long tasks are run and also should help with the pods restarts. But cpu usage should stay low since the caching.

[softwarefactory-project-zuul[bot]]

Build succeeded. https://softwarefactory-project.io/zuul/t/packit-service/buildset/ec3c348fa0e04d0fa3cd193a56afc6a1

:heavy_check_mark: pre-commit SUCCESS in 2m 44s :heavy_check_mark: packit-service-tests SUCCESS in 5m 00s

[softwarefactory-project-zuul[bot]]

Build succeeded. https://softwarefactory-project.io/zuul/t/packit-service/buildset/bd0a67fc84fc42b4bfed580afe7eb102

:heavy_check_mark: pre-commit SUCCESS in 2m 36s :heavy_check_mark: packit-service-tests SUCCESS in 2m 57s

[softwarefactory-project-zuul[bot]]

Build succeeded (gate pipeline). https://softwarefactory-project.io/zuul/t/packit-service/buildset/d78ed20afb4548dba9db1a1d3c01d559

:heavy_check_mark: pre-commit SUCCESS in 2m 36s