[skip ci]
Implement proper SCIM filter parsing by using an external library.
Turns out we have been doing it wrong. There is still an instance where we may have to conver a JSON string to a Java string properly.
[skip ci]
Equals and like have to be case insensitive. So we use lower for both value and input
[#72731888]
https://www.pivotaltracker.com/story/show/72731888
Properly use quoted values according to the scim spec
http://www.simplecloud.info/specs/draft-scim-api-01.html#query-resources