Clarify compress option in configuration properties

[ppf2]

The description (https://github.com/elastic/elasticsearch-hadoop/tree/master/repository-hdfs#configuration-properties) of the compress option suggests that there is compression of data snapshoted to HDFS. I think we mean to say whether to compress the metadata files (eg. index settings/mappings), not the data itself.

compress: "false"               # optional - whether to compress the data or not (default)

repositories
hdfs:
uri: "hdfs://:/" # optional - Hadoop file-system URI
path: "some/path" # required - path with the file-system where data is stored/loaded
load_defaults: "true" # optional - whether to load the default Hadoop configuration (default) or not
conf_location: "extra-cfg.xml" # optional - Hadoop configuration XML to be loaded (use commas for multi values)
conf. : "" # optional - 'inlined' key=value added to the Hadoop configuration
concurrent_streams: 5 # optional - the number of concurrent streams (defaults to 5)
compress: "false" # optional - whether to compress the data or not (default)
chunk_size: "10mb" # optional - chunk size (disabled by default)

[costin]

Fixed - cheers for the report!