glusterfs: fix version info
glusterfs: fix version info

A build script in glusterfs uses /bin/bash interpreter and fails to get
the version from the VERSION file at build time:

  sh: build-aux/pkg-version: /bin/bash: bad interpreter: No such file or directory
  sh: build-aux/pkg-version: /bin/bash: bad interpreter: No such file or directory
  sh: build-aux/pkg-version: /bin/bash: bad interpreter: No such file or directory
  [...]

The result is that `gluster --version` doesn't include a version number.
Fixup the shebang to get the version info.

NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs