Update LdapUserDetailsContextMapper.java

backbaseConfiguration.getStringArray("KEY") will always return an array of strings, regardless of the value of the property, be it comma separated list or a single value.

backbaseConfiguration.getString("KEY") on the other hand, always returns a single string, and if it is a comma separated value, it will return only the first value.
Merge pull request #1 from lazo-backbase/patch-1

Update LdapUserDetailsContextMapper.java