Add Spring 5 Test Project and update Spring Boot

[leonard84]

No description provided.

[codecov]

Codecov Report

Merging #799 into master will increase coverage by 0.02%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##             master     #799      +/-   ##
============================================
+ Coverage     74.41%   74.43%   +0.02%     
- Complexity     3320     3321       +1     
============================================
  Files           359      359              
  Lines         10344    10344              
  Branches       1288     1288              
============================================
+ Hits           7697     7700       +3     
+ Misses         2179     2176       -3     
  Partials        468      468

Impacted Files	Coverage Δ	Complexity Δ
...kframework/spring/mock/SpockMockPostprocessor.java	82.66% <0%> (+2%)	40% <0%> (+1%)	⬆️

---

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 8c851c6...78bc207. Read the comment docs.