STORM-2861: Explicit reference kafka-schema-registry-client

[vesense]

https://issues.apache.org/jira/browse/STORM-2861

[ptgoetz]

@vesense I tried to reproduce this by deleting Kafka-avro-serializer from my local maven repository, but the build succeeded. Can you elaborate a bit?

[satishd]

@vesense kafka-avro-serializer module depends on kafka-schema-registry-client. This change does not seem to be really required. What issue are you facing with the existing dependency?

I also do not see any issues in building with the existing dependency like @ptgoetz.

[vesense]

@ptgoetz@satishd
Yes, I know that kafka-avro-serializer depends on kafka-schema-registry-client and avro.
There were io.confluent.kafka.schemaregistry.client.XXX not found errors when compiling the storm-hdfs code, and this PR fixed the issue. (To tell the truth, it's a bit strange.)
Another benefit is that users can know clearly about which avro version they are using. By default the avro module is from hadoop-common dependencies.

I tried to reproduce this by deleting Kafka-avro-serializer from my local maven repository, but the build succeeded.

Did you try maven clean & compile after deleting?