Pre-select greenbone sensor as default scanner type

[bjoernricks]

What:

For creating a scanner use the greenbone sensor as default scanner type
when opening the dialog.

Why:

Customers may be confused by adding a OSP scanner because current sensors are based on OSP too.

How:

Checklist:

• Tests
• CHANGELOG Entry
• Labels for ports to other branches

[codecov]

Codecov Report

Merging #2867 (42310dc) into gsa-21.04 (74a1fd3) will decrease coverage by 0.00%.
The diff coverage is 83.33%.

@@              Coverage Diff              @@
##           gsa-21.04    #2867      +/-   ##
=============================================
- Coverage      53.83%   53.83%   -0.01%     
=============================================
  Files           1075     1075              
  Lines          26226    26232       +6     
  Branches        7491     7499       +8     
=============================================
+ Hits           14118    14121       +3     
- Misses         10993    10995       +2     
- Partials        1115     1116       +1     

Impacted Files	Coverage Δ
gsa/src/web/pages/nvts/solution.js	22.22% <0.00%> (-11.12%)	⬇️
gsa/src/web/pages/targets/details.js	10.00% <ø> (ø)
gsa/src/web/pages/scanners/dialog.js	70.31% <66.66%> (+0.47%)	⬆️
gsa/src/gmp/models/certbund.js	100.00% <100.00%> (ø)
gsa/src/gmp/models/cpe.js	94.73% <100.00%> (-0.27%)	⬇️
gsa/src/gmp/models/cve.js	98.21% <100.00%> (-0.04%)	⬇️
gsa/src/gmp/models/dfncert.js	100.00% <100.00%> (ø)
gsa/src/gmp/models/nvt.js	99.00% <100.00%> (+0.07%)	⬆️
gsa/src/gmp/models/ovaldef.js	94.54% <100.00%> (-0.10%)	⬇️
gsa/src/web/pages/tasks/actions.js	100.00% <100.00%> (ø)

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 3794fa4...42310dc. Read the comment docs.