Add Bulk Update for postgres #9

Job	Run time
Check Minimal supported rust version (1.31.0)	1s
Compiletests	3m 35s
Check sqlite bundled	55s
Check (stable, postgres, ubuntu-18.04)	1s
Check (stable, postgres, macos-latest)	17s
Check (stable, postgres, windows-latest)	9m 46s
Check (stable, sqlite, ubuntu-18.04)	1s
Check (stable, sqlite, macos-latest)	3m 44s
Check (stable, sqlite, windows-latest)	1m 20s
Check (stable, mysql, ubuntu-18.04)	1s
Check (stable, mysql, macos-latest)	4m 10s
Check (stable, mysql, windows-latest)	3m 41s
Check (beta, postgres, ubuntu-18.04)	1s
Check (beta, postgres, macos-latest)	1m 1s
Check (beta, postgres, windows-latest)	9m 4s
Check (beta, sqlite, ubuntu-18.04)	1s
Check (beta, sqlite, macos-latest)	2m 16s
Check (beta, sqlite, windows-latest)	51s
Check (beta, mysql, ubuntu-18.04)	1s
Check (beta, mysql, macos-latest)	4m 16s
Check (beta, mysql, windows-latest)	5m 20s
Check (nightly, postgres, ubuntu-18.04)	1s
Check (nightly, postgres, macos-latest)	10s
Check (nightly, postgres, windows-latest)	10m 32s
Check (nightly, sqlite, ubuntu-18.04)	1s
Check (nightly, sqlite, macos-latest)	1m 46s
Check (nightly, sqlite, windows-latest)	55s
Check (nightly, mysql, ubuntu-18.04)	1s
Check (nightly, mysql, macos-latest)	1m 48s
Check (nightly, mysql, windows-latest)	3m 39s
	1h 9m 16s

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