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

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

java/google/registry/config/files/default-config.yaml

@@ -160,6 +160,12 @@ icannReporting:
   # URL we PUT monthly ICANN activity reports to.
   icannActivityReportingUploadUrl: https://ry-api.icann.org/report/registry-functions-activity
 
+  # Domain for the email address we send reporting pipeline summary emails from.
+  icannReportingEmailSenderDomain: appspotmail.com
+
+  # Address we send reporting pipeline summary emails to.
+  icannReportingEmailRecipient: email@example.com
+
 rde:
   # URL prefix of ICANN's server to upload RDE reports to. Nomulus adds /TLD/ID
   # to the end of this to construct the full URL.