Add http2 directive instead of listen option
#391
| Job | Run time |
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| 33s | |
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| 4m 55s | |
| 4m 1s | |
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| 5m 4s | |
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| 4m 30s | |
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| 4m 49s | |
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| 3m 3s | |
| 4m 0s | |
| 5m 13s | |
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| 5m 20s | |
| 4m 30s | |
| 0s | |
| 1h 59m 19s |