ci(metis): retry junit reporter install

Jenkinsfile

@@ -188,7 +188,6 @@ PY
             apt-get update >/dev/null
             apt-get install -y --no-install-recommends xz-utils >/dev/null
             mkdir -p build
-            go install github.com/jstemmer/go-junit-report/v2@latest
             export GOPROXY="${GOPROXY:-https://proxy.golang.org,direct}"
             retry_command() {
               attempts=4
@@ -209,6 +208,7 @@ PY
                 attempt=$((attempt + 1))
               done
             }
+            retry_command go install github.com/jstemmer/go-junit-report/v2@latest
             cd "${WORKSPACE}"
             docs_rc=1
             quality_rc=1