Release version 0.21-SNAPSHOT
[release] updated scim schema version
[task] prepared auth server for ldap authentication

- added spring security ldap dependency
- updated login template for login modus switch (normal, ldap)
- added test file for ledap server emulation
[task] adjusted code and test to new extension builder
[task] added login filter for decision between internal and ldap
[task] made ldap configurable
[task] optimized java ldap configuration
[task] renamed variable
[task] updated ldap user to scim user mapping
Merge pull request #174 from dacrome/ldap

[task] completed ldap integration in auth server
[task] added osiam default configuration file and updated field names
Merge pull request #175 from dacrome/added-properties-file

[task] added osiam default configuration file and updated field names
[task] deleted not used client credential property fields
Merge pull request #176 from dacrome/deleted-not-used-client-properties

[task] deleted not used client credential property fields
[fix] check if type of email is set
Merge pull request #177 from dacrome/fixed-type-nullpointer

[fix] check if type of email is set
[task] added auth server client to the init sql script
Merge pull request #178 from dacrome/updated-init-sql-script

[task] added auth server client data to the init sql script
[task] added auth extension and field origin. Saving ldap in extension
in case the user comes from ldap
Merge pull request #179 from davidmoebius/OSNG-429-save_origin

[task] added auth extension and field origin. Saving ldap in extension