Fix strace in syscall test

+ python ../test/syscall/syscall.py

test/syscall/wt2336_base/base.run:77: expecting dir = open("./", 0);

build_posix/test/syscall/WT_TEST.wt2336_base.0/stderr.txt:32: does not match

  28: pwrite64(4, "# Do not modify this file.\n#\n# W"..., 298, 0) = 298

  29: fdatasync(4)                            = 0

  30: close(4)                                = 0

  31: rename("./WiredTiger.basecfg.set", "./WiredTiger.basecfg") = 0

  32: open("./", O_RDONLY|O_CLOEXEC)          = 4

For a HOW TO on debugging, see the top of syscall.py

running /work/jenkins/workspace/wiredtiger-syscall-linux/build_posix/test/syscall/test_wt2336_base

comparing:

  test/syscall/wt2336_base/base.run

  build_posix/test/syscall/WT_TEST.wt2336_base.0/stderr.txt

************************ FAILED ************************

WT-4607 Allow prepare timestamp to commit behind oldest timestamp. (commit: 74322c8) — github / githubweb

WT-4526 Allow durable updates to be evicted to the lookaside file. (commit: 39bd8ed) — vamsi.krishna / githubweb

WT-4602 Clang Tidy and Clang Scan fixes (#4501) (commit: 27e461b) — vamsi.krishna / githubweb

Remove unneccessary parentheses and disable linter at this line. (#4510) (commit: 82c3f83) — vamsi.krishna / githubweb

WT-4620 Assert a uint64_t can hold a time_t, maintain seconds as (commit: 66184c8) — github / githubweb

WT-4628 WiredTiger test-utility-progress function reopens the tracking (commit: b2298a1) — github / githubweb

Fix a buffer overrun, the wrong sizeof() argument being passed to (commit: 5ee0c0a) — sue / githubweb

WT-4618 Don't hijack other sessions in __wt_verbose_dump_txn. (#4514) (commit: 9d547b4) — sue / githubweb