Build and test installer #1604

Job	Run time
Build installer (linux-64)	7m 24s
Build installer (linux-aarch64)	7m 55s
Build installer (linux-ppc64le)	5m 44s
Build installer (osx-arm64)	4m 53s
Build installer (osx-64)	7m 35s
Create environment.yaml (linux-64)	38s
Integration tests (Py3 server) (rel-v8r0)	21m 17s
macOS tests (macos-11)	1s
Basic tests (centos:7)	1m 0s
macOS tests (macos-12)	1m 47s
Integration tests (Py3 server) (integration)	23m 53s
Basic tests (centos:8)	1m 11s
Show release notes and diff	1m 44s
	1h 25m 2s

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