test-federation.sh: Make use of WHAT consistent with make test

hack/make-rules/test-integration.sh

@@ -41,7 +41,7 @@ KUBE_TEST_ARGS=${KUBE_TEST_ARGS:-}
 kube::test::find_integration_test_dirs() {
   (
     cd ${KUBE_ROOT}
-    find test/integration/${1-} -name '*_test.go' -print0 \
+    find test/integration/ -name '*_test.go' -print0 \
       | xargs -0n1 dirname | sed "s|^|${KUBE_GO_PACKAGE}/|" \
       | LC_ALL=C sort -u
   )
@@ -67,7 +67,7 @@ runTests() {
   # TODO: Re-enable race detection when we switch to a thread-safe etcd client
   # KUBE_RACE="-race"
   make -C "${KUBE_ROOT}" test \
-      WHAT="$(kube::test::find_integration_test_dirs ${2-} | paste -sd' ' -) $(echo ${@:3})" \
+      WHAT="${WHAT:-$(kube::test::find_integration_test_dirs | paste -sd' ' -)}" \
       KUBE_GOFLAGS="${KUBE_GOFLAGS:-} -tags 'integration no-docker'" \
       KUBE_TEST_ARGS="${KUBE_TEST_ARGS:-} ${SHORT:--short=true} --vmodule=garbage*collector*=6 --alsologtostderr=true" \
       KUBE_RACE="" \
@@ -96,20 +96,8 @@ if [[ -n "${KUBE_TEST_ARGS}" ]]; then
   exit 0
 fi
 
-# Pass arguments that begin with "-" and move them to goflags.
-what_flags=()
-for arg in "$@"; do
-  if [[ "${arg}" == -* ]]; then
-    what_flags+=("${arg}")
-  fi
-done
-if [[ "${#what_flags[@]}" -eq 0 ]]; then
-  what_flags=''
-fi
-
-
 # Convert the CSV to an array of API versions to test
 IFS=';' read -a apiVersions <<< "${KUBE_TEST_API_VERSIONS}"
 for apiVersion in "${apiVersions[@]}"; do
-  runTests "${apiVersion}" "${1-}" "${what_flags[@]}"
+  runTests "${apiVersion}"
 done