Apply different configurations by separate launchers

Add 3 lauchers for 4, 8 and 16 GB RAM on host PC.

For Linux(Cygwin) and Darwin used different way of fetch total memory.

Change-Id: I70487bda3e7492f72b5d5051de2e697bcae03377
Closes-Bug: #1358345
Merge "Apply different configurations by separate launchers"