Add a description to the get-alerts example script help output. Add an argument to filter alerts based on healthCategory and servity.
Add a description to the get-alerts example script help output. Add an argument to filter alerts based on healthCategory and servity.

miqui/python-hpOneView,andreadean5/python-hpOneView,HewlettPackard/python-hpOneView,danielreed/python-hpOneView,HewlettPackard/python-hpOneView,ufcg-lsd/python-hpOneView