Remove projects that are inactive for 3 consecutive
releases to save infra resources. Refer to discussion
here [1.]
[1.] https://lists.opendaylight.org/pipermail/tsc/2019-February/010953.html
[2.] https://wiki.opendaylight.org/view/TSC:Procedures_and_Processes#Project_Archiving_and_Termination_Reviews
Change-Id: I0bfb1aee4d066e565c2e2b134fd02fae4ea93ce0
Signed-off-by: Anil Belur <abelur@linuxfoundation.org>