refactor(k3s): relocate and update k3s installation script

Moved install-k3s.sh from tests/k3s to scripts directory
* Updated install-k3s.sh script to set KUBECONFIG directly to /etc/rancher/k3s/k3s.yaml

Signed-off-by: Jiaxiao (mossaka) Zhou <[email protected]>

Author: Mossaka

Makefile

@@ -71,7 +71,7 @@ tests/collect-debug-logs:
 
 .PHONY: install-k3s, build-and-push-images
 install-k3s:
-	./tests/k3s/install-k3s.sh
+	./scripts/install-k3s.sh
 build-and-push-images:
 	./tests/k3s/build-and-push-images.sh
 

tests/k3s/install-k3s.sh renamed to scripts/install-k3s.sh

@@ -7,11 +7,8 @@ set -euo pipefail
 # We will just need to make sure that containerd-shim-spin-v2 binary is in PATH
 # and that the k3s service is running.
 
-curl -sfL https://get.k3s.io | sh -
+curl -sfL https://get.k3s.io | sh -s - server --write-kubeconfig-mode '0644' 
 sudo systemctl start k3s
-sudo k3s kubectl get nodes
 
-sudo chmod 644 /etc/rancher/k3s/k3s.yaml
-sudo cp /etc/rancher/k3s/k3s.yaml $HOME/.kube/k3s.yaml
-export KUBECONFIG=$HOME/.kube/k3s.yaml
+export KUBECONFIG=/etc/rancher/k3s/k3s.yaml
 kubectl get nodes