feat: agent is already setup

Signed-off-by: kjuulh <contact@kjuulh.io>

install.sh

@@ -40,15 +40,13 @@ set +e
 res=$(churn agent setup --discovery "${CHURN_DISCOVERY}" 2>&1)
 set -e
 exit_code=$?
-echo "Command output: $res"
-echo "Exit code: $exit_code"
 
 if [[ $exit_code != 0 ]]; then
     if [[ "$res" != *"config file already exists"* ]] && [[ "$res" != *"already exists"* ]]; then
         echo "Error detected: $res"
         exit 1
     else
-        echo "Ignoring expected 'already exists' error"
+        echo "Ignoring setup 'agent is already setup'"
     fi
 fi