Added database related files and updated thrift files to add more methods (#24)

* Added Added initial files for entities,repositories for allocation manager module

* Revert "Added Added initial files for entities,repositories for allocation manager module"

This reverts commit 645c7fc51f2855e1149bc506c20d13501ce39515.

* Added entities,repositories,utils and updated pom file

* Added entities,repositories,utils and updated pom file

* Revert "Added entities,repositories,utils and updated pom file"

This reverts commit 9859fd79e659db94e86489cdb2611e84a3c398c4.

* Added entities,repositories,utils and updated pom file

* Added test cases,persistance files

* Deleted binary files

* Updated thrift file to add more methods
8 files changed