Fixing error: adding a new/forgotten parameter to the configuration f…

…or checking the config on startup in plugins/repository-s3 (#7924) (#7929)

* Update S3RepositoryPlugin.java

Fixing error: adding a new parameter to the configuration for checking the config on startup.



* Update CHANGELOG.md



* Add proxy settings type to test case settings to make sure it is accepted



---------




(cherry picked from commit d55813e)

Signed-off-by: Konstantin Gerasimenko <kred@gmx.net>
Signed-off-by: Andriy Redko <andriy.redko@aiven.io>
Signed-off-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>
Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>
Co-authored-by: Andriy Redko <andriy.redko@aiven.io>

CHANGELOG.md

@@ -31,6 +31,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 ### Removed
 
 ### Fixed
+-  Fixing error: adding a new/forgotten parameter to the configuration for checking the config on startup in plugins/repository-s3 #7924 
 
 ### Security
 

plugins/repository-s3/src/internalClusterTest/java/org/opensearch/repositories/s3/S3BlobStoreRepositoryTests.java

@@ -154,6 +154,7 @@ protected Settings nodeSettings(int nodeOrdinal) {
             .put(S3ClientSettings.DISABLE_CHUNKED_ENCODING.getConcreteSettingForNamespace("test").getKey(), true)
             // Disable request throttling because some random values in tests might generate too many failures for the S3 client
             .put(S3ClientSettings.USE_THROTTLE_RETRIES_SETTING.getConcreteSettingForNamespace("test").getKey(), false)
+            .put(S3ClientSettings.PROXY_TYPE_SETTING.getConcreteSettingForNamespace("test").getKey(), ProxySettings.ProxyType.DIRECT)
             .put(super.nodeSettings(nodeOrdinal))
             .setSecureSettings(secureSettings);
 

plugins/repository-s3/src/main/java/org/opensearch/repositories/s3/S3RepositoryPlugin.java

@@ -104,6 +104,7 @@ public List<Setting<?>> getSettings() {
             S3ClientSettings.SESSION_TOKEN_SETTING,
             S3ClientSettings.ENDPOINT_SETTING,
             S3ClientSettings.PROTOCOL_SETTING,
+            S3ClientSettings.PROXY_TYPE_SETTING,
             S3ClientSettings.PROXY_HOST_SETTING,
             S3ClientSettings.PROXY_PORT_SETTING,
             S3ClientSettings.PROXY_USERNAME_SETTING,