Add LogSites to the jar released to maven

RELNOTES=Add `LogSites` class missing from flogger-0.5.jar

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=302638246

api/BUILD

@@ -96,6 +96,7 @@ pom_file(
         ":context",
         ":lazy_args",
         ":log_site",
+        ":log_sites",
         ":platform_provider",
         ":reflection_utils",
         ":stack",
@@ -114,6 +115,7 @@ jarjar_library(
         ":config",
         ":lazy_args",
         ":log_site",
+        ":log_sites",
         ":platform_provider",
         ":reflection_utils",
         ":stack",
@@ -130,6 +132,7 @@ jarjar_library(
         ":libcontext-src.jar",
         ":liblazy_args-src.jar",
         ":liblog_site-src.jar",
+        ":liblog_sites-src.jar",
         ":libreflection_utils-src.jar",
         ":libstack-src.jar",
         ":libtags-src.jar",