New a method to get current rate setting for JCache/Hazelcast integration.

[kchenhal]

Right now the Bucket.getConfiguration() only return the value provided in configuration Supplier. it did not reflect the true setting when integrated with JCache, or Hazelcast.

[vladimir-bukhtoyarov]

getConfiguration method removed from bucket interface in order to avoid undefined behavior. Instead following ways added:

• New interface LocalBucket with method getConfiguration for local useage scenarios
• New method getProxyConfiguration in ProxyManager for distributed usage scenarios.

[vladimir-bukhtoyarov]

@kchenhal please provide feedback for #53 and #54 using following dependency

<dependency>
    <groupId>com.github.vladimir-bukhtoyarov</groupId>
    <artifactId>bucket4j-core</artifactId>
    <version>3.1.0-rc1</version>
</dependency>

If all will work fine for you then I will release version 3.1.0

[vladimir-bukhtoyarov]

released!