Add proxy to controller in testing.

Author: Juan Tirado

.github/workflows/test.yaml

@@ -42,6 +42,32 @@ jobs:
       with:
         provider: lxd
         juju-channel: 3.0/stable
+    - name: Set proxy in controller
+      run: |
+        set -euxo pipefail
+        # build a squid config file
+        CONTROLLER_IP=$(juju list-controllers --format yaml | yq '.controllers[.current-controller].recent-server' | awk -F '[:]' '{print $1}');
+        echo "Controller IP is: $CONTROLLER_IP"
+        PROXY=$CONTROLLER_IP:3128
+        echo "Proxy address is: $PROXY"
+        echo "acl all src all" > /tmp/squid.conf
+        echo "http_access allow all" >> /tmp/squid.conf
+        echo "http_port $PROXY" >> /tmp/squid.conf
+        cat /tmp/squid.conf
+        # copy to the controller and reconfigure it
+        juju status -m controller
+        juju switch controller
+        juju ssh 0 "sudo apt-get install squid -y"
+        juju scp /tmp/squid.conf 0:/tmp/squid.conf
+        juju ssh 0 "sudo mv /tmp/squid.conf /etc/squid/squid.conf"
+        juju ssh 0 "sudo squid -k reconfigure"
+        # Test curl after waiting
+        sleep 10
+        echo "Test proxy access"
+        curl -s -o /dev/null -w "%{http_code}" --proxy http://$PROXY https://charmhub.io
+        # set model defaults
+        juju model-defaults localhost apt-http-proxy=$PROXY apt-https-proxy=$PROXY  juju-http-proxy=$PROXY juju-https-proxy=$PROXY  snap-http-proxy=$PROXY snap-https-proxy=$PROXY
+        juju model-defaults localhost
     - name: Setup Python
       uses: actions/setup-python@v4
       with: