Fix code action service tests to read committed data

Summary:
Instead of rolling back every transaction, we need to commit the transaction
first, so we can use a State_reader to read the committed data back.

So, this diff changes the tests to commit transactions instead. After we commit,
we can run the function under test. After that, we run another transaction to
remove the file.

Reviewed By: mroch

Differential Revision: D42199510

fbshipit-source-id: 1c5eb09cab4e05fb05303a49721e3785319f73cd

v0.196.2

Reviewed By: SamChou19815

Differential Revision:
D42187476 (facebook@7bbc417)

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(from a17c40e5563ed7b18d308e6ae44bb9261ee75c26)

fbshipit-source-id: a6ad271c8a1b582a20a6f87397c92e6a04f60f38

v0.196.1

Reviewed By: SamChou19815

Differential Revision: D42143997

fbshipit-source-id: 220f2986827fd5623363871d5ad970d46401c717

v0.196.0

Reviewed By: SamChou19815

Differential Revision:
D42048627 (facebook@8fff830)

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(from 74a899e4501a490ed033ccf7a0bb93f107b92795)

fbshipit-source-id: c27970bdc26e6081459c266be27ee59de29f01d8

v0.195.2

Reviewed By: SamChou19815

Differential Revision: D41921158

fbshipit-source-id: 31a50152141e08350c2d324ef5fd22465db3f66a

v0.195.1

Reviewed By: SamChou19815

Differential Revision: D41879364

fbshipit-source-id: e61a3ac52590ec60bacf84d74de31a8626148598

v0.195.0

Reviewed By: SamChou19815

Differential Revision: D41831536

fbshipit-source-id: 53818863745b28b016c339dc3dce430e4e53863f

v0.194.0

Reviewed By: SamChou19815

Differential Revision:
D41588246 (facebook@53f9104)

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(from a7670ac3c76908c7655e4e1fa5db51c602e98db5)

fbshipit-source-id: 9fae9032404a30035f12d1bb9c6d9f2892420249

v0.193.0

Reviewed By: SamChou19815

Differential Revision:
D41232306 (facebook@98c06ae)

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(from c80d4928d6453144be0adefedeaec75c1ebfbdae)

fbshipit-source-id: ce0a49755197f84d6cbb9a4abcc29309ff2baf1e

v0.192.0

Reviewed By: mvitousek

Differential Revision: D41008825

fbshipit-source-id: 170ff439df7682829c2c545b359b6a11f4d849c2