Add report_event() method into reporter object

Report event will write json formatted event into report
file.

Include Boost headers as system headers to avoid generating
excessive warnings. Enable extra tests for selected compilers
in actions.

.github/workflows/build.yml

@@ -159,19 +159,27 @@ jobs:
         else
           export CXX="ccache clang++-${{ matrix.config.version }}"
         fi
-        if [ ${{ matrix.config.version }} == "4.8" ]
+        if [ ${{ matrix.config.CC }} == "gcc" ] && [ ${{ matrix.config.version }} == "4.8" ]
         then
           STRICT=OFF
           DBSIM=OFF
+          TESTS_EXTRA=OFF
+        elif [ ${{ matrix.config.CC }} == "gcc" ] && [ ${{ matrix.config.version }} == "5" ]
+        then
+          STRICT=ON
+          DBSIM=ON
+          TESTS_EXTRA=OFF
         else
           STRICT=ON
           DBSIM=ON
+          TESTS_EXTRA=ON
         fi
         cmake $GITHUB_WORKSPACE -DCMAKE_BUILD_TYPE=${{ matrix.config.type }} \
           -DWSREP_LIB_MAINTAINER_MODE:BOOL=ON \
           -DWSREP_LIB_STRICT_BUILD_FLAGS:BOOL=$STRICT \
           -DWSREP_LIB_WITH_DBSIM:BOOL=$DBSIM \
-          -DWSREP_LIB_WITH_ASAN:BOOL=ON .
+          -DWSREP_LIB_WITH_ASAN:BOOL=ON \
+          -DWSREP_LIB_WITH_UNIT_TESTS_EXTRA:BOOL=$TESTS_EXTRA
 
     - name: Build
       working-directory: ${{runner.workspace}}/build