hello i added managed identity support for sonaqube

hello i been testing this

https://github.com/SonarSource/sonarqube/pull/3420

so far seems to be working with identities fine in azure , on vm, or aks , and still testing on eks in aws pointing to aws rds postgresl or mysql but so far worked on virtual machine pointing to aws rds

you can aslo build locally and pass the zip to

https://github.com/SonarSource/docker-sonarqube in comunity build docker folder

and then use the helm chart from my forked branch to test

https://github.com/gabo89/helm-chart-sonarqube

for azure need to add some env var like azure_client_id , set some annotation on service account and set some flag wich are also mentioned on the values , needed to edit the jdbc-config template file to add those vars