fix(IWYU): fix the suggestions reported by IWYU while rebase merging …

…branch migrate-metrics-dev into master such as including

src/replica/test/mutation_log_test.cpp

@@ -26,6 +26,7 @@
 
 #include "replica/mutation_log.h"
 
+// IWYU pragma: no_include <ext/alloc_traits.h>
 #include <sys/types.h>
 #include <cstdint>
 #include <iostream>

src/replica/test/replica_test.cpp

@@ -15,9 +15,6 @@
 // specific language governing permissions and limitations
 // under the License.
 
-// IWYU pragma: no_include <gtest/gtest-message.h>
-// IWYU pragma: no_include <gtest/gtest-test-part.h>
-#include <gtest/gtest.h>
 #include <stddef.h>
 #include <stdint.h>
 #include <atomic>

src/server/pegasus_server_impl_init.cpp

@@ -27,6 +27,7 @@
 #include <rocksdb/table.h>
 #include <rocksdb/write_buffer_manager.h>
 #include <stdio.h>
+#include <algorithm>
 #include <cstdint>
 #include <memory>
 #include <mutex>

src/utils/test/enum_helper_test.cpp

@@ -17,10 +17,6 @@
 
 #include "utils/enum_helper.h"
 
-// IWYU pragma: no_include <gtest/gtest-message.h>
-// IWYU pragma: no_include <gtest/gtest-param-test.h>
-// IWYU pragma: no_include <gtest/gtest-test-part.h>
-#include <gtest/gtest.h>
 #include <tuple>
 #include <vector>