Include client certificates in KapuaConnectionContext

[elbert3]

Include the client certificates in the KapuaConnectionContext. This allows further processing/checking of the certificates in the Authenticator.

Related Issue
N/A

Description of the solution adopted
N/A

Screenshots
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Any side note on the changes made
N/A

[codecov]

Codecov Report

Merging #1950 into develop will decrease coverage by 9.07%.
The diff coverage is 0%.

@@             Coverage Diff              @@
##             develop   #1950      +/-   ##
============================================
- Coverage      55.38%   46.3%   -9.08%     
+ Complexity      1743    1203     -540     
============================================
  Files           1133    1134       +1     
  Lines          26785   26699      -86     
  Branches        2264    2260       -4     
============================================
- Hits           14835   12364    -2471     
- Misses         10998   13504    +2506     
+ Partials         952     831     -121

Impacted Files	Coverage Δ	Complexity Δ
...pua/broker/core/plugin/KapuaConnectionContext.java	70.83% <0%> (-13.23%)	0 <0> (ø)
...r/core/plugin/KapuaDuplicateClientIdException.java	0% <0%> (-100%)	0% <0%> (ø)
...ns/configuration/KapuaConfigurationErrorCodes.java	0% <0%> (-100%)	0% <0%> (ø)
...g/eclipse/kapua/test/steps/AbstractKapuaSteps.java	0% <0%> (-100%)	0% <0%> (-2%)
...iguration/metatype/XmlConfigPropertiesAdapted.java	0% <0%> (-100%)	0% <0%> (ø)
...store/internal/ClientInfoRegistryServiceProxy.java	0% <0%> (-100%)	0% <0%> (-4%)
...apua/service/user/internal/UserListResultImpl.java	0% <0%> (-100%)	0% <0%> (ø)
...ntication/shiro/KapuaAuthenticationErrorCodes.java	0% <0%> (-100%)	0% <0%> (ø)
...apua/broker/core/plugin/KapuaBrokerErrorCodes.java	0% <0%> (-100%)	0% <0%> (ø)
.../account/internal/setting/KapuaAccountSetting.java	0% <0%> (-100%)	0% <0%> (ø)
... and 327 more

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