Add preliminary spec11 monthly pipeline

This adds the scaffolding for a basic Spec11 pipeline- it gathers all domains from all time for a given project and counts how many there are. I've factored out a few common utilities for beam pipelines to avoid excessive duplication.

Future CLs will:
- Actually process domains via the SafeBrowsing API
- Generate a real spec11 report
- Template queries based on the input YearMonth
- Abstract more commonalities across beam pipelines to reduce boilerplate when adding new pipelines.

TESTED: FOSS test passed, and ran successfully on alpha

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=205997741

java/google/registry/config/RegistryConfig.java

@@ -520,25 +520,38 @@ public final class RegistryConfig {
     }
 
     /**
-     * Returns the URL of the GCS location we store jar dependencies for the invoicing pipeline.
+     * Returns the URL of the GCS location for storing the monthly spec11 Beam template.
      *
-     * @see google.registry.beam.invoicing.InvoicingPipeline
+     * @see google.registry.beam.spec11.Spec11Pipeline
      */
     @Provides
-    @Config("invoiceStagingUrl")
+    @Config("spec11TemplateUrl")
+    public static String provideSpec11TemplateUrl(
+        @Config("apacheBeamBucketUrl") String beamBucketUrl) {
+      return beamBucketUrl + "/templates/spec11";
+    }
+
+    /**
+     * Returns the URL of the GCS location we store jar dependencies for beam pipelines.
+     *
+     * @see google.registry.beam.invoicing.InvoicingPipeline
+     * @see google.registry.beam.spec11.Spec11Pipeline
+     */
+    @Provides
+    @Config("beamStagingUrl")
     public static String provideInvoiceStagingUrl(
         @Config("apacheBeamBucketUrl") String beamBucketUrl) {
       return beamBucketUrl + "/staging";
     }
 
     /**
-     * Returns the Google Cloud Storage bucket for ICANN transaction and activity reports to
-     * be uploaded.
+     * Returns the Google Cloud Storage bucket for Spec11 and ICANN transaction and activity reports
+     * to be uploaded.
      *
      * @see google.registry.reporting.icann.IcannReportingUploadAction
      */
     @Provides
-    @Config("icannReportingBucket")
+    @Config("reportingBucket")
     public static String provideIcannReportingBucket(@Config("projectId") String projectId) {
       return projectId + "-reporting";
     }
@@ -588,6 +601,17 @@ public final class RegistryConfig {
       return "gs://" + billingBucket;
     }
 
+    /**
+     * Returns the URL of the GCS subdirectory we store Spec11 reports in.
+     *
+     * @see google.registry.beam.spec11.Spec11Pipeline
+     */
+    @Provides
+    @Config("spec11BucketUrl")
+    public static String provideSpec11BucketUrl(@Config("reportingBucket") String reportingBucket) {
+      return "gs://" + reportingBucket + "/icann/spec11";
+    }
+
     /**
      * Returns whether or not we should publish invoices to partners automatically by default.
      *