fix: ignore added interface methods for generated code (#101)

Adds generic ignore rules for added methods to interfaces in the generated code.

Fixes #99

proto-google-cloud-spanner-admin-database-v1/clirr-ignored-differences.xml

@@ -1,34 +1,10 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!-- see http://www.mojohaus.org/clirr-maven-plugin/examples/ignored-differences.html -->
 <differences>
+  <!-- Ignore all new methods in interfaces in the generated code. -->
   <difference>
     <differenceType>7012</differenceType>
-    <className>com/google/spanner/admin/database/v1/DatabaseOrBuilder</className>
-    <method>* getCreateTime()</method>
-  </difference>
-  <difference>
-    <differenceType>7012</differenceType>
-    <className>com/google/spanner/admin/database/v1/DatabaseOrBuilder</className>
-    <method>* getCreateTimeOrBuilder()</method>
-  </difference>
-  <difference>
-    <differenceType>7012</differenceType>
-    <className>com/google/spanner/admin/database/v1/DatabaseOrBuilder</className>
-    <method>* getRestoreInfo()</method>
-  </difference>
-  <difference>
-    <differenceType>7012</differenceType>
-    <className>com/google/spanner/admin/database/v1/DatabaseOrBuilder</className>
-    <method>* getRestoreInfoOrBuilder()</method>
-  </difference>
-  <difference>
-    <differenceType>7012</differenceType>
-    <className>com/google/spanner/admin/database/v1/DatabaseOrBuilder</className>
-    <method>* hasCreateTime()</method>
-  </difference>
-  <difference>
-    <differenceType>7012</differenceType>
-    <className>com/google/spanner/admin/database/v1/DatabaseOrBuilder</className>
-    <method>* hasRestoreInfo()</method>
+    <className>com/google/spanner/admin/database/v1/*</className>
+    <method>*</method>
   </difference>
 </differences>

proto-google-cloud-spanner-admin-instance-v1/clirr-ignored-differences.xml

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!-- see http://www.mojohaus.org/clirr-maven-plugin/examples/ignored-differences.html -->
+<differences>
+  <!-- Ignore all new methods in interfaces in the generated code. -->
+  <difference>
+    <differenceType>7012</differenceType>
+    <className>com/google/spanner/admin/instance/v1/*</className>
+    <method>*</method>
+  </difference>
+</differences>

proto-google-cloud-spanner-v1/clirr-ignored-differences.xml

@@ -1,19 +1,10 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!-- see http://www.mojohaus.org/clirr-maven-plugin/examples/ignored-differences.html -->
 <differences>
+  <!-- Ignore all new methods in interfaces in the generated code. -->
   <difference>
     <differenceType>7012</differenceType>
-    <className>com/google/spanner/v1/ExecuteSqlRequestOrBuilder</className>
-    <method>* getQueryOptions()</method>
-  </difference>
-  <difference>
-    <differenceType>7012</differenceType>
-    <className>com/google/spanner/v1/ExecuteSqlRequestOrBuilder</className>
-    <method>* getQueryOptionsOrBuilder()</method>
-  </difference>
-  <difference>
-    <differenceType>7012</differenceType>
-    <className>com/google/spanner/v1/ExecuteSqlRequestOrBuilder</className>
-    <method>* hasQueryOptions()</method>
+    <className>com/google/spanner/v1/*</className>
+    <method>*</method>
   </difference>
 </differences>