Add an Open Governance Policy #756

Job	Run time
Test Build	4m 48s
Test Browser on macOS (safari, disabled)	1m 47s
Test Shell (spidermonkey, main)	51s
Test Browser on macOS (safari, main)	1m 2s
Test Shell (jsc, disabled)	1m 54s
Test Browser on macOS (safari, default)	1m 59s
Test Shell (jsc, default)	3m 10s
Test Shell (v8, main)	41s
Test Browser on Linux (firefox, disabled)	1m 27s
Test Browser on Linux (chrome, default)	1m 32s
Test Shell (spidermonkey, disabled)	2m 11s
Test Shell (v8, default)	2m 42s
Test Browser on Linux (firefox, default)	1m 37s
Test Shell (spidermonkey, default)	5m 40s
Test Browser on Linux (firefox, main)	40s
Test Browser on Linux (chrome, main)	38s
Test Browser on Linux (chrome, disabled)	1m 2s
Test Shell (v8, disabled)	1m 37s
Test Shell (jsc, main)	45s
	36m 3s

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