maintenancetool.exe shows wrong errorLevel

return code for maintenencetool.exe is inconsistent

If the installation is successful the return code is 0, which is expected

if the installation failed due to internet connection the return code is 1, which is expected

if the installation failed due to insufficient disk space the return code is 0, which is not expected

SW uses return code as reliable way to check if component is installed successfully, so in case of failure it should be 1