Fallback to byte array for non-Kura body payload

[lorthirk]

Currently, if a message is sent to the broker that does not conform to the Kura Protobuf specification, that message is discarded. With this PR it will be stored anyway instead, with the raw payload in the body.

Related Issue
No related issue

[codecov]

Codecov Report

Merging #2745 into develop will decrease coverage by 0.02%.
The diff coverage is 0%.

@@              Coverage Diff              @@
##             develop    #2745      +/-   ##
=============================================
- Coverage      54.53%   54.51%   -0.03%     
+ Complexity      2990     2370     -620     
=============================================
  Files           1049     1049              
  Lines          29813    29816       +3     
  Branches        2387     2387              
=============================================
- Hits           16259    16254       -5     
- Misses         12435    12441       +6     
- Partials        1119     1121       +2

Impacted Files	Coverage Δ	Complexity Δ
...a/translator/mqtt/kura/TranslatorDataMqttKura.java	18.75% <0%> (-4.33%)	3 <0> (ø)
...ua/broker/core/listener/DeviceMessageListener.java	46.8% <0%> (-6.39%)	0% <0%> (ø)
...egistry/event/internal/DeviceEventServiceImpl.java	69.38% <0%> (-4.09%)	6% <0%> (-5%)
...e/registry/internal/DeviceRegistryServiceImpl.java	48.43% <0%> (-3.13%)	13% <0%> (-3%)
...service/datastore/internal/MessageStoreFacade.java	49.1% <0%> (+0.44%)	11% <0%> (-5%)	⬇️
...translator/kura/kapua/TranslatorDataKuraKapua.java	85.29% <0%> (+2.94%)	7% <0%> (ø)	⬇️

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