Pytest-dynamodb

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- [enhancement] change deprecated getfuncargvalaue to getfixturevalues, require at least pytest 3.0.0

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- [enhancements] set executor timeout to 60. By default mirakuru waits indefinitely, which might cause test hangs

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- create command line and pytest.ini configuration options for introducing delays
- create command line and pytest.ini configuration options for dynamodb_dir
- create command line and pytest.ini configuration options for host
- create command line and pytest.ini configuration options for port
- Extracted code from pytest-dbfixtures