uci: update to latest Git head

uci: update to latest Git head

 8dd50da20de0 lua: fix error handling
 a2cab3b088a2 ucimap: fix possible use of memory after it is freed
 9cf978bc7964 delta: prevent possible null pointer use
 7736f497d2d9 cli: remove unused variable assigment
 39093f3b040d lua: fix memory leak in set method
 19ceff323f1e lua: fix memory leak in changes method
 18049a84fe40 tests: add cram based unit tests
 2b549cc050de lua: fix copy&paste in error string
 f5dd5217d627 cli: fix realloc issue spotted by cppcheck
 af59f86a0db9 iron out all extra compiler warnings
 1637d2918692 tests: shunit2: run all tests under Valgrind by default
 c1af73bfb023 cmake: enable extra compiler checks
 be69504e3666 cmake: build Lua module only if enabled
 38a2f12ec5ab tests: shunit2: fix issues reported by shellcheck
 266fc9e94c1e add initial GitLab CI support
 17d6144a49c6 tests: shunit2: make it working under CMake
 a6e8bbefd860 cmake: add unit testing option and shunit2 tests
 0ca93fec701a test: move shunit2 tests under standalone subdirectory

Signed-off-by: Petr Štetiar <ynezz@true.cz>