Cleanup conf refactor

[mormamn]

Description

Seperated the config file and argparsing from the main file into a seprate module.

Contribution Guidelines

Please Read through the Contribution Guidelines.

Fixed Issues

Resolves #289 Resolves #292

Contribution checklist

• [X] I have read the Contributing Guidelines.
• [X] The commits refer to an active issue in the repository.
• [ ] I have added automated testing to cover this case.

Notes

I didn't add any functionality, so nothing needs to be added to the tests.

[codecov-io]

Codecov Report

Merging #310 into master will increase coverage by 0.4%. The diff coverage is 65.57%.

@@           Coverage Diff            @@
##           master    #310     +/-   ##
========================================
+ Coverage    59.8%   60.2%   +0.4%     
========================================
  Files          39      41      +2     
  Lines        1928    1945     +17     
========================================
+ Hits         1153    1171     +18     
+ Misses        775     774      -1

Impacted Files	Coverage Δ
kube_hunter/modules/report/collector.py	89.28% <0%> (ø)	:arrow_up:
kube_hunter/conf/parser.py	100% <100%> (ø)
kube_hunter/conf/__init__.py	100% <100%> (ø)	:arrow_up:
kube_hunter/modules/report/__init__.py	100% <100%> (ø)	:arrow_up:
kube_hunter/modules/report/plain.py	14.77% <28.57%> (-0.96%)	:arrow_down:
kube_hunter/modules/report/base.py	23.52% <28.57%> (-2.19%)	:arrow_down:
kube_hunter/modules/report/yaml.py	50% <50%> (-4.55%)	:arrow_down:
kube_hunter/modules/report/json.py	66.66% <50%> (ø)	:arrow_up:
kube_hunter/modules/report/factory.py	52.94% <52.94%> (ø)
... and 3 more

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[iyehuda]

Hi @mormamn !

Thanks for your contribution. Notice that this PR also indirectly fixes #292.