Bug: Fix Character Escaping on Generic Searches

[ally-jarrett]

Currently (0.5.1) Generic searches are broken as wilcard and special characters will be escaped.

For Example:

Consider the repository method:

Page<Entity> search(String searchCriteria, Pageable pageable);

Using Search terms such as:

repository.search("The Matrix", pageRequest); // search for terms "The" AND "Matrix"
repository.search("Avenge*", pageRequest); // prefix search for terms beginning with "Avenge"
repositry.search("\"James Bond\"", pageRequest); // Search explicitly for the term "James Bond"

redis-om will produce the following queries params:

"FT.SEARCH" "<INDEX>" "The\\ Matrix" 
"FT.SEARCH" "<INDEX>" "Avenge\\* 
"FT.SEARCH" "<INDEX>" "\\\"James\\ Bond\\\""

Escaping for generic searches should be left to the calling client rather than the redis-om lib.