functional and tested flow for installation

...src/main/java/net/jami/jams/ad/connector/ADConnector.java

...va/net/jami/jams/authmodule/UserAuthenticationModule.java

...store/src/main/java/net/jami/datastore/dao/SystemDao.java

...tore/src/main/java/net/jami/datastore/main/DataStore.java

integration-test/install-server.py

...mi/jams/ca/workers/csr/builders/SystemAccountBuilder.java

...ams/ca/workers/csr/builders/SystemAccountBuilderTest.java

jams-common/src/main/java/module-info.java

...jami/jams/common/authentication/AuthenticationSource.java

...i/jams/common/authentication/local/LocalAuthSettings.java

...net/jami/jams/common/authmodule/AuthenticationModule.java

...jams/common/objects/requests/CreateAuthSourceRequest.java

...et/jami/jams/common/objects/requests/CreateCARequest.java

...jami/jams/common/objects/requests/CredentialsRequest.java

...n/java/net/jami/jams/common/objects/roots/X509Entity.java

...n/java/net/jami/jams/common/objects/roots/X509Fields.java

...va/net/jami/jams/common/objects/system/SystemAccount.java

...main/java/net/jami/jams/common/server/ServerSettings.java

...n/src/main/java/net/jami/jams/common/utils/Validator.java

jams-server/src/main/java/net/jami/jams/server/Server.java