[SDC] Set concurrency option in integration template

Add the option to have concurrent builds for CSIT, default to false
Enable for SDC to avoid jobs piling up

Issue-ID: SDC-3465
Signed-off-by: ChrisC <christophe.closset@intl.att.com>
Change-Id: I8dfc8fc2e3e46287adfba9972b8ff22b247f95e1
2 files changed