Create DS1517+.yaml (#3478)

* Create DS1517+.yaml

* Update DS1517+.yaml

---------

Co-authored-by: Harry <Harry@cadby.co.uk>

device-types/Synology/DS1517+.yaml

@@ -0,0 +1,24 @@
+---
+manufacturer: Synology
+model: DS1517+
+slug: synology-ds1517-plus
+part_number: DS1517+
+u_height: 4
+airflow: front-to-rear
+weight: 5.2
+weight_unit: kg
+comments: '[Synology DS1517+ Specs](https://global.download.synology.com/download/Document/Hardware/DataSheet/DiskStation/17-year/DS1517+/enu/Synology_DS1517_Plus_Data_Sheet_enu.pdf)'
+is_full_depth: false
+power-ports:
+  - name: PSU0
+    type: iec-60320-c14
+    maximum_draw: 43
+interfaces:
+  - name: LAN 1
+    type: 1000base-t
+  - name: LAN 2
+    type: 1000base-t
+  - name: LAN 3
+    type: 1000base-t
+  - name: LAN 4
+    type: 1000base-t