Why I did it
Fix the boolean value case sensitive issue in Azure Pipelines
When passing parameters to a template, the "true" or "false" will have case sensitive issue, it should be a type casting issue.
To fix it, we change the true/false to yes/no, to escape the trap.
Support to override the job groups in the template, so PR build has chance to use different build parameters, only build simple targets. For example, for broadcom, we only build target/sonic-broadcom.bin, the other images, such as swi, debug bin, etc, will not be built.
