- Jenkins compile drop arch until container is updated and maintained
 - clang-tidy disable for now, the new version isn't respecting the existing configuration

 - these only run if code coverage is enabled

 - keeping nuttx and armhf compile jobs on 2018-09-11 for now

Also some general minor sanitizer improvements.

 - add to AddressSanitizer and UndefinedBehaviorSanitizer to CMAKE_BUILD_TYPE options
 - handle environment variable helpers outside of CMake
 - add -O1 optimization
 - cleanup whitespace

- Environment variables for building with asan
- Docker argument for leak sanitizer
- Regex for tests to fail on sanitizer error

Signed-off-by: Lukas Woodtli <woodtli.lukas@gmail.com>