* Adding async support for AWSSigV4 Signed-off-by: Harsha Vamsi Kalluri <[email protected]> * Fix names for connection classes Signed-off-by: Harsha Vamsi Kalluri <[email protected]> * Update tests to async name space Signed-off-by: Harsha Vamsi Kalluri <[email protected]> * Add import exceptions to python < 3.6 Signed-off-by: Harsha Vamsi Kalluri <[email protected]> Signed-off-by: Harsha Vamsi Kalluri <[email protected]>