Werk #7962: Fix various bugs in the liebert* check plugins
| Component | Checks & agents |
| Title | Fix various bugs in the liebert* check plugins |
| Date | Aug 1, 2019 |
| Checkmk Edition | Checkmk Raw (CRE) |
| Checkmk Version | 1.5.0p22 1.6.0b5 2.0.0i1 |
| Level | Trivial Change |
| Class | Bug Fix |
| Compatibility | Compatible - no manual interaction needed |
