RFR: 8338884: Test BasicFileAttributeView/CreationTime.java#tmp fails on alinux3 after JDK-8338696

[SendaoYan]

Hi all,
On alinux3(alibaba cloud linux version 3) system, the `/tmp` disk partition is mounted as tmpfs filesystem type, this filesystem type doesn't support create time(birth time).

Before this PR, this test [check](https://github.com/openjdk/jdk/blob/master/test/jdk/java/nio/file/attribute/BasicFileAttributeView/CreationTime.java#L110) if there is `statx` system call present or not to determise the test environment support birth time or not. I think it's not enough when the tested filesystem type is `tmpfs`. When the tested filesystem type is `tmpfs`, then the tested file doesn't support birth time.

Test fix only, the change has been verified, no risk.

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Commit messages:
 - 8338884: Test BasicFileAttributeView/CreationTime.java#tmp fails on alinux3 after JDK-8338696

Changes: https://git.openjdk.org/jdk/pull/20687/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=20687&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8338884
  Stats: 4 lines in 1 file changed: 4 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/20687.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/20687/head:pull/20687

PR: https://git.openjdk.org/jdk/pull/20687