* Update submodules
* Checkout submodules.
* Fix git command in Dockerfile.
* Change remote URL.
* Change superbuild thirdparty download policy from submodules to source git.
* Remove thirdparty submodules.
* Avoid submodule update in Dockerfile.
* Disable spdlog bench.
* Move Sanitizers as external project.
* Modify CMAKE_MODULE_PATH setting policy.
* Change CMake version to v1.1.3.
* Fix Sanitizers find package.
* Modify git external project for backward compatibility with CMake 3.5.
* Update Micro-XRCE-DDS-Client dependency to v1.1.2 version.