QNAP TS-251+ (#1640)

* Regenerate master slug list after successful PR merge

* Add QNAP-TS-251+ branch

* Rename QNAP_TS-251+ yaml

* remove "+" from slug

* Correct labels

* Test P instead of plus

* Test with dash plus

* Rename to plus

* Revert "Rename to plus"

This reverts commit 9898c563535dfbf38587dca40947ad49f54254b3.

* Revert "Test with dash plus"

This reverts commit 15156fcfdfd05c5ea750a901aa878726af9f4b80.

* Revert "Test P instead of plus"

This reverts commit 966a82d357d62b9d7fa640d06e9aebcf93c959a1.

* Revert "Correct labels"

This reverts commit 1078f6132031392bdeb000468508afc1b4918d27.

* Revert "remove "+" from slug"

This reverts commit c2634a8e94fec2a893de22aa03bd47a9f8d632d3.

* Revert "Rename QNAP_TS-251+ yaml"

This reverts commit 5d68645f5878192417714987ac830f101c9b1b6f.

* Revert "Add QNAP-TS-251+ branch"

This reverts commit 8f3f4b114951dd2990efaa9a7e7f7bfc9d50c272.

* Revert "Regenerate master slug list after successful PR merge"

This reverts commit a90bcfdfc7bde18425c6ef574e8abbeb551f7f25.

* Try readding from scratch

* Add airflow

* Update TS-251-plus.yml

---------

Co-authored-by: NetBox-Bot <info@netboxlabs.com>
Co-authored-by: Daniel W. Anner <daniel.anner@danstechsupport.com>

device-types/QNAP/TS-251-plus.yml

@@ -0,0 +1,23 @@
+---
+manufacturer: QNAP
+model: TS-251+
+slug: qnap-ts-251-plus
+part_number: TS-251+
+is_full_depth: false
+weight: 1.28
+weight_unit: kg
+airflow: side-to-rear
+comments: '[TS-251+ | Hardware Specs | QNAP](https://www.qnap.com/en/product/ts-251+/specs/hardware)'
+power-ports:
+  - name: Power
+    label: DC 12V
+    type: dc-terminal
+    maximum_draw: 19
+    allocated_draw: 11
+interfaces:
+  - name: eth0
+    label: '1'
+    type: 1000base-t
+  - name: eth1
+    label: '2'
+    type: 1000base-t