Update tracing to use OTLP/HTTP (#569) #18

Job	Run time
release / Quality Checks / Check the CHARMHUB_TOKEN secret	1s
release / Quality Checks / Linting / Lint	18s
release / Quality Checks / Inclusive naming / check	4s
release / Quality Checks / Scenario Tests / Scenario tests	28s
release / Quality Checks / Static Analysis / Static Analysis of Libs	11s
release / Quality Checks / Static Analysis / Static Analysis of Charm	16s
release / Quality Checks / Unit Tests / Unit tests	32s
release / Quality Checks / Check libraries	25s
release / Quality Checks / Integration Tests / Integration Tests	50m 16s
release / Quality Checks / CodeQL analysis / Analyze (python)	1m 51s
release / Release any bumped charm library	36s
release / Release Charm and Libraries / Build the charms	5m 9s
release / Release Charm and Libraries / Charm List	1s
release / Release Charm and Libraries / Release to CharmHub (./prometheus-k8s_ubuntu-20.04-amd64.charm)	1m 48s
	1h 1m 56s

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