Combine regression test suite and main CMake projects

Combining the projects makes it easier to use common components. This
fixes the build failure of maxutils due to missing jansson definitions.

maxscale-system-test/mdbci/run_test.sh

@@ -64,9 +64,11 @@ res=$?
 ulimit -c unlimited
 if [ $res == 0 ] ; then
     . ${script_dir}/set_env.sh $name
-    cd ${script_dir}/..
+    cd ${script_dir}/../../
+
     mkdir build && cd build
-    cmake .. -DBUILDNAME=$name -DCMAKE_BUILD_TYPE=Debug
+    cmake ../../ -DWITH_SYSTEM_TESTS -DBUILDNAME=$name -DCMAKE_BUILD_TYPE=Debug
+    cd maxscale-system-test
     make
 
     if [ ! -z "${named_test}" ] ; then
@@ -82,7 +84,7 @@ if [ $res == 0 ] ; then
             exit 1
         fi
         ${mdbci_dir}/mdbci snapshot take --path-to-nodes $name --snapshot-name clean
-        ctest -VV -D Nightly ${test_set}
+        ctest -VV ${test_set}
     fi
     cp core.* ${logs_publish_dir}
     ${script_dir}/copy_logs.sh