Expose AccountService.findChildrenRecursive on REST API

[lorthirk]

Use /{scopeId}/accounts?recursive=true to retrieve all the Accounts down the hierarchy starting from the current one

Related Issue
No related issues

[codecov]

Codecov Report

Merging #3265 (b42ec19) into develop (f6ac4d3) will decrease coverage by 21.62%.
The diff coverage is 71.42%.

@@              Coverage Diff               @@
##             develop    #3265       +/-   ##
==============================================
- Coverage      49.32%   27.70%   -21.63%     
+ Complexity       762      661      -101     
==============================================
  Files           1455     1455               
  Lines          29749    29753        +4     
  Branches        2498     2498               
==============================================
- Hits           14675     8243     -6432     
- Misses         14244    20873     +6629     
+ Partials         830      637      -193     

Impacted Files	Coverage Δ	Complexity Δ
...kapua/app/api/resources/v1/resources/Accounts.java	0.00% <0.00%> (ø)	0.00 <0.00> (ø)
...a/service/account/internal/AccountServiceImpl.java	82.85% <100.00%> (+45.90%)	0.00 <0.00> (ø)
...rc/main/java/org/eclipse/kapua/KapuaException.java	0.00% <0.00%> (-100.00%)	0.00% <0.00%> (ø%)
...c/main/java/org/eclipse/kapua/KapuaErrorCodes.java	0.00% <0.00%> (-100.00%)	0.00% <0.00%> (ø%)
...in/java/org/eclipse/kapua/broker/BrokerDomain.java	0.00% <0.00%> (-100.00%)	0.00% <0.00%> (ø%)
...ain/java/org/eclipse/kapua/event/ServiceEvent.java	0.00% <0.00%> (-100.00%)	0.00% <0.00%> (ø%)
...n/java/org/eclipse/kapua/broker/BrokerDomains.java	0.00% <0.00%> (-100.00%)	0.00% <0.00%> (ø%)
...va/org/eclipse/kapua/commons/util/SystemUtils.java	0.00% <0.00%> (-100.00%)	0.00% <0.00%> (ø%)
...n/java/org/eclipse/kapua/model/domain/Actions.java	0.00% <0.00%> (-100.00%)	0.00% <0.00%> (ø%)
.../java/org/eclipse/kapua/message/KapuaPosition.java	0.00% <0.00%> (-100.00%)	0.00% <0.00%> (ø%)
... and 517 more