services/nomad/build/buildbot: sort packages before printing

this should fix ordering issues with split logs

Author: classabbyamp

services/nomad/build/buildbot.cfg

@@ -285,6 +285,17 @@ factory.addStep(ShellCommandWithChanges(
     workdir=builddir(),
 ))
 
+factory.addStep(steps.ShellCommand(
+    command=['make', 'sort'],
+    name='sort_packages',
+    description='sorting packages to build',
+    descriptionDone='sorted packages',
+    haltOnFailure=True,
+    logEnviron=False,
+    usePTY=True,
+    workdir=builddir(),
+))
+
 factory.addStep(steps.SetPropertyFromCommand(
     command=['make', 'print_pkgs'],
     property='packages',