message: Fix flags in build matrix
diff: // Default CMake flags for release builds.
  defaultReleaseBuildFlags = [
  'CAF_ENABLE_RUNTIME_CHECKS:BOOL=ON',
  + 'CAF_ENABLE_ACTOR_PROFILER:BOOL=ON',
  ]
  // Default CMake flags for debug builds.
  defaultDebugBuildFlags = defaultReleaseBuildFlags + [
  - 'CAF_SANITIZERS:STRING=address,undefined',
  'CAF_LOG_LEVEL:STRING=TRACE',
  - 'CAF_ENABLE_ACTOR_PROFILER:BOOL=ON',
  ]
  // Configures the behavior of our stages.
  @@ -31,10 +30,12 @@ config = [
  ['centos-6', [
  builds: ['debug', 'release'],
  tools: ['gcc-7'],
  + extraDebugFlags: ['CAF_SANITIZERS:STRING=address,undefined'],
  ]],
  ['centos-7', [
  builds: ['debug', 'release'],
  tools: ['gcc-7'],
  + extraDebugFlags: ['CAF_SANITIZERS:STRING=address,undefined'],
  ]],
  ['ubuntu-16.04', [
  builds: ['debug', 'release'],
  @@ -59,10 +60,16 @@ config = [
  ['macOS', [
  builds: ['debug', 'release'],
  tools: ['clang'],
  + extraFlags: [
  + 'OPENSSL_ROOT_DIR=/usr/local/opt/openssl',
  + 'OPENSSL_INCLUDE_DIR=/usr/local/opt/openssl/include',
  + ],
  + extraDebugFlags: ['CAF_SANITIZERS:STRING=address,undefined'],
  ]],
  ['FreeBSD', [
  builds: ['debug', 'release'],
  tools: ['clang'],
  + extraDebugFlags: ['CAF_SANITIZERS:STRING=address,undefined'],
  ]],
  // Non-UNIX systems.
  ['Windows', [
  @@ -70,6 +77,7 @@ config = [
  //builds: ['debug', 'release'],
  builds: ['release'],
  tools: ['msvc'],
  + extraFlags: ['CAF_ENABLE_OPENSSL_MODULE:BOOL=OFF'],
  ]],
  ],
  // Platform-specific environment settings.
  @@ -83,24 +91,12 @@ config = [
  ],
  // CMake flags by OS and build type to override defaults for individual builds.
  buildFlags: [
  - macOS: [
  - debug: defaultDebugBuildFlags + [
  - 'OPENSSL_ROOT_DIR=/usr/local/opt/openssl',
  - 'OPENSSL_INCLUDE_DIR=/usr/local/opt/openssl/include',
  - ],
  - release: defaultReleaseBuildFlags + [
  - 'OPENSSL_ROOT_DIR=/usr/local/opt/openssl',
  - 'OPENSSL_INCLUDE_DIR=/usr/local/opt/openssl/include',
  - ],
  - ],
  - Windows: [
  - debug: defaultDebugBuildFlags + [
  - 'CAF_ENABLE_OPENSSL_MODULE:BOOL=OFF',
  - ],
  - release: defaultReleaseBuildFlags + [
  - 'CAF_ENABLE_OPENSSL_MODULE:BOOL=OFF',
  - ],
  + nop: [],
  ],
  + // Default CMake flags by build type.
  + defaultBuildFlags: [
  + debug: defaultDebugBuildFlags,
  + release: defaultReleaseBuildFlags,
  ],
  // Configures what binary the coverage report uses and what paths to exclude.
  coverage: [
  