Add a node definition for the Catalyst 8000V Edge Software.

node-definitions/cisco/cat8000v/README.md

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+# Cisco Catalyst 8000V Edge Software
+
+This directory contains the following node definition:
+
+* `cat8000v.yaml` - Cisco Catalyst 8000V Edge Software node definition
+
+### Image Availability
+
+Images for the Cat8000v can be downloaded from https://software.cisco.com/download/home/286327102/type/282046477 with a proper Cisco.com account and entitlement.
+
+### Notes
+
+The Cat8000v comes in 8 GB and 16 GB flavors.  However, this node definition uses 1 vCPU and 4 GB of RAM.  That should
+be fine for basic testing.  However, you can override the CPU and memory on a per-image definition and per-node level
+if need be.
+
+When downloading new images from Cisco.com, be sure to get images have `-serial` in the name and are **not** EFI images.

node-definitions/cisco/cat8000v/cat8000v.yaml

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+id: cat8000v
+configuration:
+  generator:
+    driver: csr1000v
+  provisioning:
+    volume_name: disk
+    media_type: iso
+    files:
+      - name: iosxe_config.txt
+        content: |-
+          platform console serial
+          !
+          hostname insert_hostname_here
+          !
+          !
+          !
+          !
+          !
+          !
+          !
+          end
+        editable: true
+inherited:
+  image:
+    ram: true
+    cpus: true
+    data_volume: false
+    boot_disk_size: false
+    cpu_limit: true
+  node:
+    ram: true
+    cpus: true
+    data_volume: false
+    boot_disk_size: false
+    cpu_limit: true
+device:
+  interfaces:
+    has_loopback_zero: true
+    default_count: 4
+    loopback:
+      - Loopback0
+    physical:
+      - GigabitEthernet1
+      - GigabitEthernet2
+      - GigabitEthernet3
+      - GigabitEthernet4
+      - GigabitEthernet5
+      - GigabitEthernet6
+      - GigabitEthernet7
+      - GigabitEthernet8
+      - GigabitEthernet9
+      - GigabitEthernet10
+      - GigabitEthernet11
+      - GigabitEthernet12
+      - GigabitEthernet13
+      - GigabitEthernet14
+      - GigabitEthernet15
+      - GigabitEthernet16
+      - GigabitEthernet17
+      - GigabitEthernet18
+      - GigabitEthernet19
+      - GigabitEthernet20
+      - GigabitEthernet21
+      - GigabitEthernet22
+      - GigabitEthernet23
+      - GigabitEthernet24
+      - GigabitEthernet25
+      - GigabitEthernet26
+      - GigabitEthernet27
+      - GigabitEthernet28
+      - GigabitEthernet29
+      - GigabitEthernet30
+      - GigabitEthernet31
+      - GigabitEthernet32
+    serial_ports: 2
+general:
+  description: Catalyst 8000V Edge Software
+  nature: router
+  read_only: false
+schema_version: 0.0.1
+sim:
+  linux_native:
+    cpus: 1
+    disk_driver: virtio
+    driver: csr1000v
+    libvirt_domain_driver: kvm
+    nic_driver: virtio
+    ram: 4096
+    cpu_limit: 100
+boot:
+  timeout: 250
+  completed:
+    - Would you like to enter the initial configuration dialog?
+    - Press RETURN to get started!
+    - '%CVAC-4-CONFIG_DONE:'
+pyats:
+  os: iosxe
+  series: csr1000v
+  config_extract_command: show run
+  use_in_testbed: true
+ui:
+  description: |-
+    Catalyst 8000V Edge Software
+
+    4 GB DRAM, 1 vCPU
+
+    [CCO Link](https://www.cisco.com/c/en/us/products/routers/catalyst-8000v-edge-software/index.html)
+  group: Cisco
+  icon: router
+  label: CAT8000V
+  label_prefix: cat8000v-
+  visible: true