update

-d: db data path(default: /tmp/milvus)

-t: build type(default: Debug)

-f: FAISS root path(default: empty). The path should be an absolute path

    containing the pre-installed lib/ and include/ directory of FAISS

    containing the pre-installed lib/ and include/ directory of FAISS. If they can't be found,

    we will build the original FAISS from source instead.

-u: building unit test options(default: OFF)

-l: run cpplint, clang-format and clang-tidy(default: OFF)

-r: remove previous build directory(default: OFF)