Fix Javadoc typos in hadoop-openstack module

Some typos are listed below but not limited to:
SwiftNativeFileSystemObject.java
/**

• Initalize the filesystem store -this creates the REST client binding.
  *
• @param fsURI URI of the filesystem, which is used to map to the filesystem-specific
• options in the configuration file
• @param configuration configuration
• @throws IOException on any failure.
  */

SwiftNativeFileSystem.java
/**

• Low level method to do a deep listing of all entries, not stopping
• at the next directory entry. This is to let tests be confident that
• recursive deletes &c really are working.
• @param path path to recurse down
• @param newest ask for the newest data, potentially slower than not.
• @return a potentially empty array of file status
• @throws IOException any problem
  */

/**

• Low-level operation to also set the block size for this operation
• @param path the file name to open
• @param bufferSize the size of the buffer to be used.
• @param readBlockSize how big should the read blockk/buffer size be?
• @return the input stream
• @throws FileNotFoundException if the file is not found
• @throws IOException any IO problem
  */

SwiftRestClient.java

/**

• Converts Swift path to URI to make request.
• This is public for unit testing
  *
• @param path path to object
• @param endpointURI damain url e.g. http://domain.com
• @return valid URI for object
  */