Fix permissions at systemd unit file

[ppanagiotis]

Systemd unit has wrong permissions. So systemd logs:
Configuration file /lib/systemd/system/auditbeat.service is marked executable. Please remove executable permission bits. Proceeding anyway

[elasticmachine]

Since this is a community submitted pull request, a Jenkins build has not been kicked off automatically. Can an Elastic organization member please verify the contents of this patch and then kick off a build manually?

[andrewkroh]

@ppanagiotis Would you mind git apply'ing this patch to the PR. It includes a test case that checks the mode of the unit file for RPMs and .debs. You just download the file to your repo and run git apply systemd_unit_permissions_test.patch.txt. Then commit the file as usual and push. Then we'll have a failing test to go with the fix.

systemd_unit_permissions_test.patch.txt

>> Testing package contents
--- FAIL: TestRPM (0.00s)
    --- FAIL: TestRPM/auditbeat-7.0.0-alpha1-x86_64.rpm_systemd_unit_file_permissions (0.00s)
    	package_test.go:259: file /lib/systemd/system/auditbeat.service has wrong permissions: expected=-rw-r--r-- actual=-rwxr-xr-x
    --- FAIL: TestRPM/auditbeat-oss-7.0.0-alpha1-x86_64.rpm_systemd_unit_file_permissions (0.00s)
    	package_test.go:259: file /lib/systemd/system/auditbeat.service has wrong permissions: expected=-rw-r--r-- actual=-rwxr-xr-x
--- FAIL: TestDeb (0.55s)
    --- FAIL: TestDeb/auditbeat-7.0.0-alpha1-amd64.deb_systemd_unit_file_permissions (0.00s)
    	package_test.go:259: file ./lib/systemd/system/auditbeat.service has wrong permissions: expected=-rw-r--r-- actual=-rwxr-xr-x
    --- FAIL: TestDeb/auditbeat-oss-7.0.0-alpha1-amd64.deb_systemd_unit_file_permissions (0.00s)
    	package_test.go:259: file ./lib/systemd/system/auditbeat.service has wrong permissions: expected=-rw-r--r-- actual=-rwxr-xr-x
FAIL
FAIL	command-line-arguments	1.142

[andrewkroh]

It looks like this is your first contribution. 👏 As such, can you please sign the Contributor License Agreement?

[ppanagiotis]

Done.