add debug logs to print COPY time for embedding jobs #1198

Job	Run time
test_extras (ubuntu-22.04, 15)	14m 42s
test_lantern (ubuntu-22.04, 12)	21m 55s
test_extras (ubuntu-22.04, 17)	14m 20s
test_lantern (ubuntu-22.04, 13)	23m 59s
test_extras (ubicloud-standard-4-arm, 15)	2m 8s
test_lantern (ubuntu-22.04, 14)	26m 27s
test_extras (ubicloud-standard-4-arm, 17)	2m 6s
test_lantern (ubuntu-22.04, 15)	23m 28s
test_lantern (ubuntu-22.04, 16)	23m 38s
test_lantern (ubuntu-22.04, 17)	14m 58s
test_lantern (ubicloud-standard-4-arm, 12)	25m 55s
test_lantern (ubicloud-standard-4-arm, 13)	28m 29s
test_lantern (ubicloud-standard-4-arm, 14)	30m 35s
test_lantern (ubicloud-standard-4-arm, 15)	27m 26s
test_lantern (ubicloud-standard-4-arm, 16)	27m 49s
test_lantern (ubicloud-standard-4-arm, 17)	17m 58s
test_lantern (macos-13, 12)	6m 23s
test_lantern (macos-13, 13)	5m 52s
test_lantern (macos-13, 14)	6m 17s
test_lantern (macos-13, 15)	5m 16s
test_lantern (macos-13, 16)	6m 26s
test_lantern (macos-13, 17)	6m 38s
upload_coverage	0s
	6h 2m 45s

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