[test]: Fix curl error handling in reserved IP HTTP response checks

curl -w "%{http_code}" already outputs "000" when a connection fails, then exits non-zero. Without error suppression, `set -euo pipefail` exits
the script immediately.
Add `|| true` to suppress the exit code while preserving curl's own `"000"` output, allowing the retry loop to continue.

Signed-off-by: Moshe Vayner <moshe@vayner.me>

Author: moshevayner

e2e/test/lb-created-with-reserved-ip-linode-range/chainsaw-test.yaml

@@ -177,7 +177,7 @@ spec:
               #Run a curl command to the service ip
               URL="http://$service_ip:80/"
               for i in {1..10}; do
-                HTTP_RESPONSE=$(curl -s -o /dev/null -w "%{http_code}" "$URL")
+                HTTP_RESPONSE=$(curl -s -o /dev/null -w "%{http_code}" "$URL" || true)
                 if [ "$HTTP_RESPONSE" -eq 200 ]; then
                    echo "Request was successful (HTTP 200)"
                    break

e2e/test/lb-created-with-reserved-ip-nb-range/chainsaw-test.yaml

@@ -209,7 +209,7 @@ spec:
               #Run a curl command to the service ip
               URL="http://$service_ip:80/"
               for i in {1..10}; do
-                HTTP_RESPONSE=$(curl -s -o /dev/null -w "%{http_code}" "$URL")
+                HTTP_RESPONSE=$(curl -s -o /dev/null -w "%{http_code}" "$URL" || true)
                 if [ "$HTTP_RESPONSE" -eq 200 ]; then
                    echo "Request was successful (HTTP 200)"
                    break