default build postgres_fdw

[smartyhero]

fix #ISSUE_Number

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Change logs

default build postgres_fdw

Why are the changes needed?

want directly use postgres_fdw

Does this PR introduce any user-facing change?

Users can directly use create extension postgres_fdw

How was this patch tested?

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[my-ship-it]

LGTM

[my-ship-it]

Fix #45