Unify config params

[y0urself]

I thought this would be more consistent for all the default parameter.
They are now all imported from the python-gvm and this pull requests is only valid in combination with greenbone/python-gvm#185

Checklist:

• Tests
• CHANGELOG Entry "N/A"
• Documentation "N/A"

[bjoernricks]

Nice! Thanks

[bjoernricks]

We need a new minor release for python-gvm before we can merge this PR.

[bjoernricks]

i've released python-gvm 1.2.0 on Monday which includes the required changes. Please update the the dependencies (via pipenv update) and change https://github.com/greenbone/gvm-tools/blob/master/setup.py#L49 to python-gvm>=1.2.0 Afterwards your PR should be mergeable again.

[codecov]

Codecov Report

Merging #240 into master will decrease coverage by 0.33%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master     #240      +/-   ##
==========================================
- Coverage   33.41%   33.08%   -0.34%     
==========================================
  Files           6        6              
  Lines         404      402       -2     
==========================================
- Hits          135      133       -2     
  Misses        269      269

Impacted Files	Coverage Δ
gvmtools/parser.py	88.88% <ø> (-0.11%)	⬇️
gvmtools/config.py	100% <100%> (ø)	⬆️

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