update ignored diffs

Change-Id: I04698ba82b95c82301e4e9f436401698675d7ea9

Author: nicholsl

google-cloud-bigtable/clirr-ignored-differences.xml

@@ -396,4 +396,22 @@
         <method>*create*</method>
         <to>*</to>
     </difference>
+    <difference>
+        <!-- InternalApi was updated -->
+        <differenceType>4001</differenceType>
+        <className>com/google/cloud/bigtable/data/v2/stub/BigtableChannelPrimer</className>
+        <to>*</to>
+    </difference>
+    <difference>
+        <!-- InternalApi was updated -->
+        <differenceType>4001</differenceType>
+        <className>com/google/cloud/bigtable/data/v2/stub/NoOpChannelPrimer</className>
+        <to>*</to>
+    </difference>
+    <difference>
+        <differenceType>7005</differenceType>
+        <className>com/google/cloud/bigtable/gaxx/grpc/BigtableChannelPool</className>
+        <method>*create*</method>
+        <to>*</to>
+    </difference>
 </differences>