Fixes and Improves Guest Agent Image

    Fixes assignment of tmp file when creating sudoers file
    Moved libmysqlclient18 to mysql element (for future compat)
    Disable AppArmor profile for mysqld so cnf file can be changed

Change-Id: I88fcceaf423237b4cf59c111b047453cd389f9b3
Fixes: bug #1103876
Merge "Fixes and Improves Guest Agent Image"