samples: Auto-update dependencies. (#853)

* Auto-update dependencies.

* fixup stuff.

1. Bigtable uses 1.1.33.Final
2. Bigtable should use 1.0.0-pre3
3. Try and fix logging
4. remove a bunch of <prerequsites> (which is both required and annoys
Maven - the versions plugin is confused, recommends using enforcer,
then doesn’t care.
5. update to guava 23.0 where possible.
6. requires ignoring guava-jdk5
7. Storage sample would never compile.
8. add —fail-at-end so we see more of what’s wrong.

speech/snippets/src/main/java/com/example/speech/Recognize.java

@@ -17,8 +17,8 @@
 package com.example.speech;
 
 import com.google.api.gax.rpc.ApiStreamObserver;
+import com.google.api.gax.rpc.BidiStreamingCallable;
 import com.google.api.gax.rpc.OperationFuture;
-import com.google.api.gax.rpc.StreamingCallable;
 import com.google.cloud.speech.v1.LongRunningRecognizeMetadata;
 import com.google.cloud.speech.v1.LongRunningRecognizeResponse;
 import com.google.cloud.speech.v1.RecognitionAudio;
@@ -36,7 +36,6 @@
 import com.google.common.util.concurrent.SettableFuture;
 import com.google.longrunning.Operation;
 import com.google.protobuf.ByteString;
-
 import java.io.IOException;
 import java.nio.file.Files;
 import java.nio.file.Path;
@@ -382,7 +381,7 @@ public SettableFuture<List<T>> future() {
     ResponseApiStreamingObserver<StreamingRecognizeResponse> responseObserver =
         new ResponseApiStreamingObserver<StreamingRecognizeResponse>();
 
-    StreamingCallable<StreamingRecognizeRequest,StreamingRecognizeResponse> callable =
+    BidiStreamingCallable<StreamingRecognizeRequest,StreamingRecognizeResponse> callable =
         speech.streamingRecognizeCallable();
 
     ApiStreamObserver<StreamingRecognizeRequest> requestObserver =