Added CHANGELOG for version 3.0.0

Co-authored-by: Jhonathan Aristizabal <jhonathana@vmware.com>
Co-authored-by: Ramkumar Vengadakrishnan <rvengadakrishnan@pivotal.io>

feat: Added configure director and apply changes

Added release notes for v2.1.0

Added release notesto `CHANGELOG.md` so we can version the repository at
2.1.0 before major version jump.

Authored-by: Jhonathan Aristizabal <jhonathana@vmware.com>

Release v2.0.0

create CHANGELOG.md for v1.0.0

Signed-off-by: JT Archie <jtarchie@gmail.com>