samples: move generated samples to generated directory (#101)

Author: chingor13

datacatalog/src/main/java/com/google/cloud/examples/datacatalog/v1beta1/DatacatalogGetEntry.java renamed to datacatalog/generated/src/main/java/com/google/cloud/examples/datacatalog/v1beta1/DatacatalogGetEntry.java

@@ -17,9 +17,7 @@
 // sample-metadata:
 //   title:
 //   description: Get Entry
-//   usage: gradle run -PmainClass=com.google.cloud.examples.datacatalog.v1beta1.DatacatalogGetEntry
-// [--args='[--project_id "[Google Cloud Project ID]"] [--location_id "[Google Cloud Location ID]"]
-// [--entry_group_id "[Entry Group ID]"] [--entry_id "[Entry ID]"]']
+//   usage: gradle run -PmainClass=com.google.cloud.examples.datacatalog.v1beta1.DatacatalogGetEntry [--args='[--project_id "[Google Cloud Project ID]"] [--location_id "[Google Cloud Location ID]"] [--entry_group_id "[Entry Group ID]"] [--entry_id "[Entry ID]"]']
 
 package com.google.cloud.examples.datacatalog.v1beta1;
 

datacatalog/src/main/java/com/google/cloud/examples/datacatalog/v1beta1/DatacatalogLookupEntry.java renamed to datacatalog/generated/src/main/java/com/google/cloud/examples/datacatalog/v1beta1/DatacatalogLookupEntry.java

@@ -17,9 +17,7 @@
 // sample-metadata:
 //   title:
 //   description: Lookup Entry
-//   usage: gradle run
-// -PmainClass=com.google.cloud.examples.datacatalog.v1beta1.DatacatalogLookupEntry
-// [--args='[--resource_name "[Full Resource Name]"]']
+//   usage: gradle run -PmainClass=com.google.cloud.examples.datacatalog.v1beta1.DatacatalogLookupEntry [--args='[--resource_name "[Full Resource Name]"]']
 
 package com.google.cloud.examples.datacatalog.v1beta1;
 

datacatalog/src/main/java/com/google/cloud/examples/datacatalog/v1beta1/DatacatalogLookupEntrySqlResource.java renamed to datacatalog/generated/src/main/java/com/google/cloud/examples/datacatalog/v1beta1/DatacatalogLookupEntrySqlResource.java

@@ -17,9 +17,7 @@
 // sample-metadata:
 //   title:
 //   description: Lookup Entry using SQL resource
-//   usage: gradle run
-// -PmainClass=com.google.cloud.examples.datacatalog.v1beta1.DatacatalogLookupEntrySqlResource
-// [--args='[--sql_name "[SQL Resource Name]"]']
+//   usage: gradle run -PmainClass=com.google.cloud.examples.datacatalog.v1beta1.DatacatalogLookupEntrySqlResource [--args='[--sql_name "[SQL Resource Name]"]']
 
 package com.google.cloud.examples.datacatalog.v1beta1;
 

datacatalog/src/main/java/com/google/cloud/examples/datacatalog/v1beta1/DatacatalogSearch.java renamed to datacatalog/generated/src/main/java/com/google/cloud/examples/datacatalog/v1beta1/DatacatalogSearch.java

@@ -17,14 +17,13 @@
 // sample-metadata:
 //   title:
 //   description: Search Catalog
-//   usage: gradle run -PmainClass=com.google.cloud.examples.datacatalog.v1beta1.DatacatalogSearch
-// [--args='[--include_project_id "[Google Cloud Project ID]"] [--include_gcp_public_datasets false]
-// [--query "[String in search query syntax]"]']
+//   usage: gradle run -PmainClass=com.google.cloud.examples.datacatalog.v1beta1.DatacatalogSearch [--args='[--include_project_id "[Google Cloud Project ID]"] [--include_gcp_public_datasets false] [--query "[String in search query syntax]"]']
 
 package com.google.cloud.examples.datacatalog.v1beta1;
 
 import com.google.cloud.datacatalog.v1beta1.DataCatalogClient;
 import com.google.cloud.datacatalog.v1beta1.SearchCatalogRequest;
+import com.google.cloud.datacatalog.v1beta1.SearchCatalogRequest.Scope;
 import com.google.cloud.datacatalog.v1beta1.SearchCatalogResult;
 import java.util.Arrays;
 import java.util.List;