More opam package testing #785

Job	Run time
docker-master	1h 29m 33s
publish-standalone-dry-run	21s
test-standalone (master, dev, default)	1m 32s
build-js-of-ocaml (master, 4.11.1)	10m 27s
build-wasm-of-ocaml (master, 4.14.1)	20m 2s
generated-files (master)	1m 9s
standalone-haskell (master)	46m 1s
test-amd64	2h 15m 16s
validate-docker-master	23m 7s
deploy-js-wasm-of-ocaml	1m 28s
docker-check-all	1s
	5h 28m 57s

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