Errors when making installcheck in the direction of extension pg_bulkload

[cquheiha]

Describe the bug Errors when making installcheck in the direction of extension pg_bulkload

To Reproduce Steps to reproduce the behavior:

1. Git clone "pg_bulkload" from its re repository
2. Resolve compilation errors caused by different source code between Postgresql and PolarDB-for-PG 11 during extended installation such as: (1) Add the value of last argument of the function BasicOpenFilePerm, which is false (2) Add #include "utils/palloc.h" to bin/recovery.c to resolve problem for undefined type MemoryContext;
3. Execute the make installcheck command in its directory
4. Following errors happen: In the file regression.diffs, there are many errors like this:

   \! pg_bulkload -d contrib_regression data/bin1.ctl -i data/data1.bin -l results/bin1.log -P results/bin1.prs -u results/bin1.dup
   NOTICE: BULK LOAD START
   ! ERROR: query failed: ERROR:  could not open data file: No such file or directory
   ! DETAIL: query was: SELECT * FROM pgbulkload.pg_bulkload($1)
   \! awk -f data/adjust.awk results/bin1.log

   In the file bin1.log, INPUT, PARSE_BADFILE and LOGFILE are all correct:

   
   INPUT = /home/postgres/polardb_pg/contrib/pg_bulkload-3.1.20/bin/data/data1.bin
   PARSE_BADFILE = /home/postgres/polardb_pg/contrib/pg_bulkload-3.1.20/bin/results/bin1.prs
   LOGFILE = /home/postgres/polardb_pg/contrib/pg_bulkload-3.1.20/bin/results/bin1.log

The data files can be found in the above directory, but errors happend when I make installcheck.

**Environment (please complete the following information):**
 - OS: in the docker container generated by the image "registry.cn-hangzhou.aliyuncs.com/polardb_pg/polardb_pg_devel:ubuntu20.04"
 - Version: PolarDB_11_STABLE

**Additional context**
Come to help me!

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