[LU-15596] Specify TARBALL for modass build debs

• Type: Bug
• Resolution: Fixed
• Priority: Minor
• Fix Version/s: Lustre 2.16.0, Lustre 2.15.1
• Severity: 3
• Assignee: Shaun Tancheff
• Reporter: Shaun Tancheff

Description

Testing LU-14948 shows that make debs can still fail if /usr/src/lustre.tar.bz2 exists.

Fix this by in Adding the missing TARBALL environment variable.