Make dammit aggregation try to grab its semaphore only once

Monthly dammit aggregation is started through dammit_compact_daily.sh,
which grabbed the “dammit_compact_monthly.semaphore” semaphore before
invocing the monthly aggregation bash script. This bash script then
again tried to grab the same semaphore before spawning the perl
aggregation script.

So monthly aggregation always failed because the second try to grab
the semaphore failed.

We now drop grabbing the semaphore from the daily aggregation bash
script, as the monthly aggregation bash script grabs the semaphore
anyways.

Bug: 65627
Bug: 66004
Change-Id: I3b9e78920f9285c9de2212886c4a7c5b44f52305
Make daily dammit compact script rsync files if monthly step fails

Change-Id: Ia4cb3390ca2c70644017d31c2584a2704998ab5c