feat(jdbc/mysql-j-8): Add native image support for jdbc/mysql-j-8 (#966)

* fix(jdbc/mysql-j-5): testing native image support for jdbc/mysql-j-5 module

* Update run_tests_graalvm_native.sh

* register resource

* rename resource file path to follow convention

* bring back jdbc/postgresql

* add configs to CloudSqlFeature

* fix formatting

Co-authored-by: Shubha Rajan <shubhadayini@google.com>

.kokoro/tests/run_tests_graalvm_native.sh

@@ -44,7 +44,7 @@ declare -i return_code=0
 # jdbc/mysql-j-5 jdbc/mysql-j-8  jdbc/sqlserver r2dbc/sqlserver r2dbc/sqlserver
 # r2dbc/mysql
 # https://github.com/GoogleCloudPlatform/cloud-sql-jdbc-socket-factory/issues/824
-for test_directory in jdbc/postgres; do
+for test_directory in jdbc/postgres jdbc/mysql-j-8; do
   pushd ${test_directory}
   echo -e "******************** Running tests in ${test_directory} ********************\n"
   # Dependency convergence enforcer rule would fail with the junit dependencies
@@ -56,4 +56,4 @@ for test_directory in jdbc/postgres; do
   echo -e "******************** Tests complete in ${test_directory}, result: $result ********************\n"
   popd
 done
-exit ${return_code}
+exit ${return_code}

core/src/main/java/com/google/cloud/sql/nativeimage/CloudSqlFeature.java

@@ -83,6 +83,8 @@ public void beforeAnalysis(BeforeAnalysisAccess access) {
 
       NativeImageUtils.registerConstructorsForReflection(
           access, "com.mysql.cj.conf.url.SingleConnectionUrl");
+      resourcesRegistry.addResources(ConfigurationCondition.alwaysTrue(),
+              "\\Qcom/mysql/cj/util/TimeZoneMapping.properties\\E");
 
       // for mysql-j-5
       NativeImageUtils.registerConstructorsForReflection(