Credential production and monitoring for JWT access tokens

[benoitroland]

Development of a credential producer (in go-lang) and a credential monitor (in python) for the production, monitoring and refreshment of JWT access tokens. The Mytoken service is used for the renewal procedure. The setup has been tested for the Helmholtz AAI and Darwin AAI providers. Private rpms available for RHEL7 and RHEL8. Tested and deployed in production environment at KIT SCC. Development done at KIT SCC.

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[benoitroland]

Dear @bbockelm, @jasoncpatton, @GregThain, @giffels, this message to tell you that I have updated my pull request for the production and monitoring of JWT access tokens. The setup has been tested for the Helmholtz AAI and Darwin AAI providers. Private rpms available for RHEL7 and RHEL8 have been tested and deployed in production environment at KIT SCC. I am sorry for opening a new pull request. Renaming my branch has closed the previous one.