Hbase shell functionality from python

Provide full funcionality and flexible interface to the following HBase shell commands:

Group name: general
Commands: status, table_help, version, whoami

Group name: ddl
Commands: alter, alter_async, alter_status, create, describe, disable, disable_all, drop, drop_all, enable, enable_all, exists, get_table, is_disabled, is_enabled, list, show_filters

Group name: dml
Commands: count, delete, deleteall, get, get_counter, incr, put, scan, truncate

Group name: replication
Commands: add_peer, disable_peer, enable_peer, list_peers, remove_peer, start_replication, stop_replication

Group name: snapshot
Commands: clone_snapshot, delete_snapshot, list_snapshots, restore_snapshot, snapshot

Group name: security
Commands: grant, revoke, user_permission

HBase shell output is returned as a list of strings.

In addition provides proxy functionality - executeCmd enables calling to Hbase shell with any command and parameter.