APPLIED[Unstable]: [PATCH v2][SRU][E/Unstable] UBUNTU: [Packaging] Leave unsigned modules unsigned after adding .gnu_debuglink

[Seth Forshee]

On Tue, Oct 29, 2019 at 02:25:13PM -0500, Seth Forshee wrote:
> BugLink: https://bugs.launchpad.net/bugs/1850234
> 
> When adding .gnu_debuglink sections to modules we sign modules
> without regard to whether or not they were signed previously. As
> a result modules from staging which should not have been signed
> are ending up with signature. Change this to check for a module
> signature before modifying the binary, then sign the result only
> if the original module was signed.
> 
> Signed-off-by: Seth Forshee <seth.forshee at canonical.com>

Applied to unstable/master.