Add logging relation jupyter-controller #877

Job	Run time
Run Tests / Individual charm's integration tests (controller)	18m 8s
Run Tests / Individual charm's integration tests (ui)	14m 17s
Publish Charm / Generate the Charm Matrix	4s
Run Tests / Lint Code (controller)	17s
Run Tests / Bundle Integration	17m 31s
Run Tests / Lint Code (ui)	21s
Run Tests / Unit Test (controller)	22s
Run Tests / Unit Test (ui)	31s
Run Tests / Check libraries (jupyter-controller) / Check libraries	22s
Run Tests / Check libraries (jupyter-ui) / Check libraries	22s
Run Tests / Check libraries (jupyter-ui) / Lint	9s
Run Tests / Check libraries (jupyter-controller) / Lint	10s
Publish Charm / Publish Charm (./charms/jupyter-ui)	4m 54s
Publish Charm / Publish Charm (./charms/jupyter-controller)	3m 31s
	1h 0m 59s

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