Add SCM information to pipeline report

[olblak]

Fix #1355

The purpose of this pullrequest is to basic scm information to pipeline report.
This pullrequest also try to clarifiy the different usage of git branch where:

• source means the source branch used by source/condition/target
• working means the temporary branch created by Updatecli to apply modification until it lands on the target branch
• target means the targeted branch, at the moment it's only used by "action"

Test

To test this pull request, you can run the following commands:

cp <to_package_directory>
go test

Additional Information

Tradeoff

Potential improvement