feat(run-integration-test): Add arm64 instances to kind, k3s, rke2 (#74)

Author: Techassi

run-integration-test/instances.yaml

@@ -36,30 +36,45 @@ aks:
     medium: Standard_D8S_v5
     large: Standard_D16S_v5
 
-##################################
-# VM based clusters (only AMD64) #
-##################################
+#######################################
+# VM based clusters (Some only AMD64) #
+#######################################
+
+# Alpha Docs
+# https://docs.google.com/document/d/1Rl0CXds-vjbIn0w0P2sHCDu7X859uE8CQLJsIymZT6c/
 
 # https://docs.replicated.com/vendor/testing-supported-clusters#kind
 kind:
   amd64:
     small: r1.small
     medium: r1.medium
     large: r1.large
+  arm64:
+    small: r1a.small
+    medium: r1a.medium
+    large: r1a.large
 
 # https://docs.replicated.com/vendor/testing-supported-clusters#k3s
 k3s:
   amd64:
     small: r1.small
     medium: r1.medium
     large: r1.large
+  arm64:
+    small: r1a.small
+    medium: r1a.medium
+    large: r1a.large
 
 # https://docs.replicated.com/vendor/testing-supported-clusters#rke2-beta
 rke2:
   amd64:
     small: r1.small
     medium: r1.medium
     large: r1.large
+  arm64:
+    small: r1a.small
+    medium: r1a.medium
+    large: r1a.large
 
 # https://docs.replicated.com/vendor/testing-supported-clusters#openshift-okd
 okd: