[PATCH] tests: run-lfs-symbols.sh needs gawk

[Mark Wielaard]

Hi Sam,

On Thu, 2023-07-20 at 00:16 +0100, Sam James via Elfutils-devel wrote:
> With awk=mawk, I get:
> ```
> FAIL: run-lfs-symbols.sh
> ========================
> 
> First sanity-check that LFS detection works.
> checking ./testfile-nolfs
> awk: line 3: syntax error at or near /
> FAIL run-lfs-symbols.sh (exit status: 2)
> ```
> 
> 	* tests/run-lfs-symbols.sh: Call 'gawk' instead of 'awk'.

Thanks. We already require gawk for known-dwarf.awk, check for it in
configure and use it for the coverage generation.

Pushed,

Mark