Removes unused import statements

Updates tox.ini to remove suppressed F401 standard.

Updates the code files containing unused import statements

Change-Id: Ib44bd1509fdb17f457a205f9e62caf85cebee830
Closes-Bug: #1257267
Added Redis Crud Operations
blueprint redis-support

Change-Id: I741b3a39e1ec24ee81d441788be72f72726eda10