Build and test installer #1284

Job	Run time
Build installer (linux-64)	9m 42s
Build installer (linux-aarch64)	6m 23s
Build installer (linux-ppc64le)	7m 20s
Build installer (osx-arm64)	4m 45s
Build installer (osx-64)	7m 7s
macOS tests (macos-11)	3m 50s
macOS tests (macos-12)	2m 0s
Integration tests (Py3 server) (rel-v7r3)	22m 56s
Create environment.yaml (linux-64)	50s
Basic tests (centos:7)	1m 24s
Basic tests (centos:8)	1m 6s
Integration tests (Py3 server) (rel-v8r0)	23m 21s
Integration tests (Py3 server) (integration)	19m 25s
Integration tests (Py2 server) (rel-v7r3)	20m 49s
Show release notes and diff	2m 14s
	2h 13m 12s

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