Backport: Add alert rules to envoy based on the KF093 spec (#130) #325

Job	Run time
Run Tests / Integration Tests	25m 45s
Run Tests / Integration Tests	25m 45s
Publish Charm / Generate the Charm Matrix	5s
Publish Charm / Generate the Charm Matrix	5s
Run Tests / Lint Check	17s
Run Tests / Lint Check	17s
Run Tests / Unit Test	27s
Run Tests / Unit Test	27s
Run Tests / Check libraries / Check libraries	34s
Run Tests / Check libraries / Check libraries	34s
Run Tests / Check libraries / Lint	10s
Run Tests / Check libraries / Lint	10s
Run Tests / Terraform / Lint Terraform	7s
Run Tests / Terraform / Lint Terraform	7s
Run Tests / Terraform / Apply / Apply Terraform	6m 24s
Run Tests / Terraform / Apply / Apply Terraform	6m 24s
Run Tests / Terraform / Check / Check Terraform	5s
Run Tests / Terraform / Check / Check Terraform	5s
Publish Charm / Publish Charm (./)	13m 55s
Publish Charm / Publish Charm (./)	13m 46s
	1h 35m 29s

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