Task#21_Increase_coverage_oscm_app_sample

[Piotr-K8i]

Changes in this Pull Request:

• Create new tests for oscm-app-sample package

Mandatory checks:

• [x] latest changes were fetched from the upstream branch before creating this PR (branch is up to date)
• [ ] changes were tested manually
• [x] unit tests were properly implemented
• [ ] communication about interdependent changes has been sent to the team (if applicable)
• [ ] respective Jenkins jobs were referenced in additional context section of this PR

OSCM Build References:

• [OSCM Build And Push job]()
• [OSCM Pull And Start job]()

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This change is 

[codecov[bot]]

Codecov Report

Merging #110 (1aec2c3) into master (e68f318) will increase coverage by 0.55%. The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #110      +/-   ##
==========================================
+ Coverage   52.77%   53.32%   +0.55%     
==========================================
  Files         262      262              
  Lines       16715    16715              
  Branches     2191     2191              
==========================================
+ Hits         8821     8913      +92     
+ Misses       7301     7202      -99     
- Partials      593      600       +7     

Impacted Files	Coverage Δ
...ava/org/oscm/app/sample/controller/Dispatcher.java	66.15% <0.00%> (+7.69%)	:arrow_up:
...rg/oscm/app/sample/controller/PropertyHandler.java	89.47% <0.00%> (+21.05%)	:arrow_up:
...ain/java/org/oscm/app/sample/controller/Email.java	83.80% <0.00%> (+26.66%)	:arrow_up:
...g/oscm/app/sample/controller/SampleController.java	67.90% <0.00%> (+67.90%)	:arrow_up: