Only inject @Parameter-created variables in the Action itself

Icann reports have 3 parameter-provided injections:

- yearMonth
- subdir
- reportType

We move all of them away from the "inner classes" and only @Inject them in the Actions themselves.

This has 2 benefits:
- it's much clearer what all the parameter inputs of the Actions are
- the "inner injected classes" don't assume anything about the Action that uses them - they will work just as well for JSON actions as for "regular" actions.

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=233625765

java/google/registry/reporting/icann/IcannReportingUploadAction.java

@@ -17,6 +17,7 @@ package google.registry.reporting.icann;
 import static com.google.common.base.Preconditions.checkArgument;
 import static com.google.common.net.MediaType.PLAIN_TEXT_UTF_8;
 import static google.registry.reporting.icann.IcannReportingModule.MANIFEST_FILE_NAME;
+import static google.registry.reporting.icann.IcannReportingModule.PARAM_SUBDIR;
 import static google.registry.request.Action.Method.POST;
 import static java.nio.charset.StandardCharsets.UTF_8;
 import static javax.servlet.http.HttpServletResponse.SC_OK;
@@ -29,8 +30,8 @@ import com.google.common.flogger.FluentLogger;
 import com.google.common.io.ByteStreams;
 import google.registry.config.RegistryConfig.Config;
 import google.registry.gcs.GcsUtils;
-import google.registry.reporting.icann.IcannReportingModule.ReportingSubdir;
 import google.registry.request.Action;
+import google.registry.request.Parameter;
 import google.registry.request.Response;
 import google.registry.request.auth.Auth;
 import google.registry.util.Retrier;
@@ -67,8 +68,7 @@ public final class IcannReportingUploadAction implements Runnable {
   @Config("reportingBucket")
   String reportingBucket;
 
-  @Inject @ReportingSubdir
-  String subdir;
+  @Inject @Parameter(PARAM_SUBDIR) String subdir;
 
   @Inject GcsUtils gcsUtils;
   @Inject IcannHttpReporter icannReporter;