Fix fleet.migration.total log key overlap (#1951) (#1962)

Co-authored-by: Anderson Queiroz <anderson.queiroz@elastic.co>
(cherry picked from commit 60ba1cf)

Co-authored-by: Josh Dover <1813008+joshdover@users.noreply.github.com>

CHANGELOG.next.asciidoc

@@ -13,6 +13,7 @@
 - Fix issue were errors where being ignored written to elasticsearch. {pull}1896[1896]
 - LoadServerLimits will not overwrite specified limits when loading default/agent number specified values. {issue}1841[1841] {pull}1912[1912]
 - Use seperate rate limiters for internal and external API listeners. {issue}1859[1859] {pull}1904[1904]
+- Fix fleet.migration.total log key overlap {pull}1951[1951]
 
 ==== New Features
 

internal/pkg/dl/migration.go

@@ -123,7 +123,6 @@ func applyMigration(ctx context.Context, name string, index string, bulker bulk.
 		Str("fleet.migration.name", name).
 		Int("fleet.migration.es.took", resp.Took).
 		Bool("fleet.migration.es.timed_out", resp.TimedOut).
-		Int("fleet.migration.total", resp.Total).
 		Int("fleet.migration.updated", resp.Updated).
 		Int("fleet.migration.deleted", resp.Deleted).
 		Int("fleet.migration.batches", resp.Batches).
@@ -132,6 +131,7 @@ func applyMigration(ctx context.Context, name string, index string, bulker bulk.
 		Int("fleet.migration.retries.bulk", resp.Retries.Bulk).
 		Int("fleet.migration.retries.search", resp.Retries.Search).
 		Dur("fleet.migration.total.duration", time.Since(start)).
+		Int("fleet.migration.total.count", resp.Total).
 		Msgf("migration %s done", name)
 
 	for _, fail := range resp.Failures {