Summary:
Replace the old Lubuntu plymouth theme with the current plymouth spinner theme.
Use the artwork provided by Jacob Sawicki.
Ref T131
Test Plan:
1. Install the package.
2. Reboot and check, that the plymouth theme has changed and is working flickerless.
Reviewers: wxl, tsimonq2, kc2bez, The_LoudSpeaker, hmollercl
Reviewed By: kc2bez
Maniphest Tasks: T131
Differential Revision: https://phab.lubuntu.me/D97
996215e24c