Add reporting retry, emailing and better logging

This change:
- Adds retries to the staging action
- Emails domain-registry-eng@ upon completion of either action
- Simplifies logging to be more useful

TODO: fix up Module @Inject naming conventions and yearMonth injection

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=173294822

java/google/registry/reporting/ReportingUtils.java

@@ -1,34 +0,0 @@
-// Copyright 2017 The Nomulus Authors. All Rights Reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package google.registry.reporting;
-
-import com.google.common.base.Ascii;
-import google.registry.reporting.IcannReportingModule.ReportType;
-
-/** Static utils for reporting. */
-public final class ReportingUtils {
-
-  /** Generates a report filename in accord with ICANN's specifications. */
-  static String createFilename(String tld, String yearMonth, ReportType reportType) {
-    // Report files use YYYYMM naming instead of standard YYYY-MM, per ICANN requirements.
-    return String.format(
-        "%s-%s-%s.csv", tld, Ascii.toLowerCase(reportType.toString()), yearMonth.replace("-", ""));
-  }
-
-  /** Constructs the bucket name to store/upload reports to. */
-  static String createReportingBucketName(String reportingBucket, String subdir) {
-    return String.format("%s/%s", reportingBucket, subdir);
-  }
-}