Merge pull request #348 from patriot1burke/master

KeycloakApplication refactor
Fix testsuite with mongo
KEYCLOAK-419 Upgrade picketlink dependency and enable ldap connection pooling
Merge pull request #349 from mposolda/master

Fix testsuite with mongo. Upgrade picketlink and enable connection pooling for LDAP
Enforce that realm name is unique in model
Merge pull request #350 from stianst/constraints

Enforce that realm name is unique in model