AAI-221: add inital_request_time to Service and Resource

[amandazhuyilan]

Description

AAI-221: add additionalinital_request_time to Service and Resource

Changes

• add inital_request_time to Service and Resource
• add tests

Checklist

• I have commented my code, particularly in hard-to-understand areas
• I have added unit / integration tests that prove my fix is effective or that my feature works
• I have run all tests locally and they pass
• I have updated the documentation (if applicable)

How to Test Manually (if necessary)

All test shall pass.

[marius-mather]

@amandazhuyilan looks good but can we also add initial_request_time to the Galaxy registration functions, for consistency?

[marius-mather]

looks good to me!