Fix new TOX issues

[allmightyspiff]

new version of Tox is complaining about some new things.

analysis run-test: commands[0] | flake8 SoftLayer tests
analysis run-test: commands[1] | pylint SoftLayer -r n --ignore=tests,fixtures -d too-many-locals -d star-args -d redefined-variable-type -d locally-disabled -d no-else-return -d len-as-condition -d useless-object-inheritance -d consider-using-in -d consider-using-dict-comprehension -d useless-import-alias --max-args=25 --max-branches=20 --max-statements=65 --min-public-methods=0 --max-public-methods=35 --min-similarity-lines=30 --max-line-length=120
************* Module SoftLayer.transports
SoftLayer\transports.py:145:8: R1725: Consider using Python 3 style super() without arguments (super-with-arguments)
SoftLayer\transports.py:248:12: W0707: Consider explicitly re-raising using the 'from' keyword (raise-missing-from)
SoftLayer\transports.py:537:12: W0707: Consider explicitly re-raising using the 'from' keyword (raise-missing-from)
SoftLayer\transports.py:541:12: W0707: Consider explicitly re-raising using the 'from' keyword (raise-missing-from)
************* Module SoftLayer.CLI.exceptions
SoftLayer\CLI\exceptions.py:15:8: R1725: Consider using Python 3 style super() without arguments (super-with-arguments)
SoftLayer\CLI\exceptions.py:29:8: R1725: Consider using Python 3 style super() without arguments (super-with-arguments)
SoftLayer\CLI\exceptions.py:37:8: R1725: Consider using Python 3 style super() without arguments (super-with-arguments)
************* Module SoftLayer.CLI.formatting
SoftLayer\CLI\formatting.py:238:8: R1725: Consider using Python 3 style super() without arguments (super-with-arguments)
SoftLayer\CLI\formatting.py:255:15: R1725: Consider using Python 3 style super() without arguments (super-with-arguments)
************* Module SoftLayer.CLI.metadata
SoftLayer\CLI\metadata.py:58:8: W0707: Consider explicitly re-raising using the 'from' keyword (raise-missing-from)
************* Module SoftLayer.CLI.hardware.dns
SoftLayer\CLI\hardware\dns.py:64:12: W0707: Consider explicitly re-raising using the 'from' keyword (raise-missing-from)

************* Module SoftLayer.CLI.report.bandwidth
SoftLayer\CLI\report\bandwidth.py:23:8: W0707: Consider explicitly re-raising using the 'from' keyword (raise-missing-from)
************* Module SoftLayer.CLI.virt.dns
SoftLayer\CLI\virt\dns.py:64:12: W0707: Consider explicitly re-raising using the 'from' keyword (raise-missing-from)
************* Module SoftLayer.managers.ordering
SoftLayer\managers\ordering.py:363:16: W0707: Consider explicitly re-raising using the 'from' keyword (raise-missing-from)
************* Module SoftLayer.managers.storage_utils
SoftLayer\managers\storage_utils.py:537:8: W0707: Consider explicitly re-raising using the 'from' keyword (raise-missing-from)
SoftLayer\managers\storage_utils.py:680:8: W0707: Consider explicitly re-raising using the 'from' keyword (raise-missing-from)
************* Module SoftLayer.managers.vs_capacity
SoftLayer\managers\vs_capacity.py:147:12: W0707: Consider explicitly re-raising using the 'from' keyword (raise-missing-from)
************* Module SoftLayer.testing
SoftLayer\testing\__init__.py:116:8: R1725: Consider using Python 3 style super() without arguments (super-with-arguments)
SoftLayer\testing\__init__.py:187:13: R1725: Consider using Python 3 style super() without arguments (super-with-arguments)