Adding new devicetype Dell powerscale and HPE allertra (#2173)

* Adding new device to device-types

device-types/Dell/PowerScale-A300.yaml

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+---
+manufacturer: Dell
+model: PowerScale A300
+slug: dell-powerscale-a300
+u_height: 4
+is_full_depth: true
+airflow: front-to-rear
+part_number: R4U31A
+comments: '[Dell PowerScale A300 Specification Sheet](https://www.delltechnologies.com/asset/en-us/products/storage/technical-support/h16072-ss-powerscale-archive-nodes.pdf)'
+#max weight - 2x processor, 2x PSU, 24xHDD, 2xNVMe SSD
+weight: 114
+weight_unit: kg
+console-ports:
+  - name: Serial
+    type: de-9
+module-bays:
+  - name: PSU1
+    position: PSU1
+    type: iec-60320-c14
+  - name: PSU2
+    position: PSU2
+    type: iec-60320-c14
+interfaces:
+  - name: Gig-E 1
+    type: 32gfc-sfp28
+  - name: Gig-E 2
+    type: 32gfc-sfp28
+  - name: Gig-E 3
+    type: 128gfc-qsfp28
+  - name: Gig-E 4
+    type: 128gfc-qsfp28

device-types/Dell/PowerScale-H700.yaml

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+---
+manufacturer: Dell
+model: PowerScale H700
+slug: dell-powerscale-h700
+u_height: 4
+is_full_depth: true
+airflow: front-to-rear
+part_number: h700
+comments: '[Dell PowerScale H700 Specification Sheet](https://www.delltechnologies.com/asset/en-us/products/storage/technical-support/h16071-ss-powerscale-hybrid-nodes.pdf)'
+#max weight - 2x processor, 2x PSU, 60xHDD
+weight: 118
+weight_unit: kg
+console-ports:
+  - name: Serial
+    type: de-9
+module-bays:
+  - name: PSU1
+    position: PSU1
+    type: iec-60320-c14
+  - name: PSU2
+    position: PSU2
+    type: iec-60320-c14
+interfaces:
+  - name: Gig-E 1
+    type: 32gfc-sfp28
+  - name: Gig-E 2
+    type: 32gfc-sfp28
+  - name: Gig-E 3
+    type: 128gfc-qsfp28
+  - name: Gig-E 4
+    type: 128gfc-qsfp28

device-types/HPE/Alletra-6070.yaml

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+---
+manufacturer: HPE
+model: Alletra 6070
+slug: hpe-alletra-6070
+u_height: 4
+is_full_depth: true
+airflow: front-to-rear
+part_number: R4U28A
+comments: '[HPE Alletra Storage 6000 Server QuickSpecs](https://www.hpe.com/psnow/doc/a50002567enw)'
+#minumum weight - 2x processor, 2x PSU, 24xHDD, 2xNVMe SSD
+weight: 54
+weight_unit: kg
+console-ports:
+  - name: Serial
+    type: de-9
+module-bays:
+  - name: PSU1
+    position: PSU1
+  - name: PSU2
+    position: PSU2
+  - name: PSU3
+    position: PSU3
+  - name: PSU4
+    position: PSU4
+interfaces:
+  - name: Gig-E 1
+    type: 1000base-t
+  - name: Gig-E 2
+    type: 1000base-t
+  - name: Gig-E 3
+    type: 1000base-t
+  - name: Gig-E 4
+    type: 1000base-t
+  - name: Gig-E 5
+    type: 1000base-t
+  - name: Gig-E 6
+    type: 1000base-t
+  - name: Gig-E 7
+    type: 1000base-t
+  - name: Gig-E 8
+    type: 1000base-t
+  - name: iLO
+    type: 1000base-t
+    mgmt_only: true