PM-779 checkpoint files are now marked using the link attribute.
PM-779 generate the -k and -K options for kickstart. we have two new
pegasus profile keys maxwalltime and expected_walltime.
PM-779 updated the unit testcases for the new keys
PM-779 link attritute is modified in DAX 3.5 not 3.4
PM-779 update the java dax generator to support link="checkpoint" in
uses tag. still need to bump up the version number.
Merge remote-tracking branch 'origin/master'