chore(policy): exclude packages from code coverage report

                <groupId>org.jacoco</groupId>

                <artifactId>jacoco-maven-plugin</artifactId>

                <version>${jacoco.version}</version>

                <configuration>

                    <excludes>

                        <exclude>policy/*</exclude>

                        <exclude>context/*</exclude>

                        <exclude>monitoring/*</exclude>

                        <exclude>service/*</exclude>

                        <exclude>kpi_sample_types/*</exclude>

                    </excludes>

                </configuration>

                <executions>

                    <execution>

                        <id>instrument-unit-tests</id>