Get non-zero exit code from sonnobuoy cli in case of returned failed status

[mwieczorek]

Is this a BUG REPORT or FEATURE REQUEST?:
Feature Request

What happened:
I run:
sonobuoy status
and get information about failed plugin.
But when I run
echo $?
I got
0
exit code.

What you expected to happen:
If status is failed I'd like to get non zero exit code so I can handle it properly in case of using sonobuoy cli in bash scripts. Without it I need to parse the output.

How to reproduce it (as minimally and precisely as possible):

Anything else we need to know?:
I run sonobuoy v0.11.1

Environment:

• Sonobuoy tarball (which contains * below)
• Kubernetes version (use kubectl version):
• Cloud provider or hardware configuration:
• OS (e.g. from /etc/os-release):
• Kernel (e.g. uname -a):