Collectors for mysql throughput and hbase region usage

Set to run on a 5 minute interval (300s) since tcpdump can have a bit of a steep overhead on a production server.
Please use the standard header for this collector:

```python
# This file is part of tcollector.
# Copyright (C) 2013 The tcollector Authors.
#
# This program is free software: you can redistribute it and/or modify it
# under the terms of the GNU Lesser General Public License as published by
# the Free Software Foundation, either version 3 of the License, or (at your
# option) any later version. This program is distributed in the hope that it
# will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty
# of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
# General Public License for more details. You should have received a copy
# of the GNU Lesser General Public License along with this program. If not,
# see <http://www.gnu.org/licenses/>.
```