add new smart ups model (#568)

device-types/TrippLite/SMART1500RMXL2UA.yaml

@@ -0,0 +1,37 @@
+---
+manufacturer: Tripp-Lite
+model: SMART1500RMXL2UA
+slug: smart1500rmxl2ua
+part_number: SMART1500RMXL2UA
+comments: |
+  Battery-backed power supply feeding 8 Nema-5-15R receptables
+
+  Dimensions: 3.45" x 17.3" x 13.45" Weight: 21.09 kg/46.5 lbs
+u_height: 2
+is_full_depth: true
+console-ports:
+  - name: RS232
+    type: de-9
+  - name: USB
+    type: usb-b
+power-ports:
+  - name: Primary
+    type: nema-5-15p
+    maximum_draw: 1350
+power-outlets:
+  - name: '1'
+    type: nema-5-15r
+  - name: '2'
+    type: nema-5-15r
+  - name: '3'
+    type: nema-5-15r
+  - name: '4'
+    type: nema-5-15r
+  - name: '5'
+    type: nema-5-15r
+  - name: '6'
+    type: nema-5-15r
+  - name: '7'
+    type: nema-5-15r
+  - name: '8'
+    type: nema-5-15r