[JIRA] (OVIRT-1561) Fix SCM and trigger yamls to support project, custom project and special foldering

Fix SCM and trigger yamls to support project, custom project and special foldering ---------------------------------------------------------------------------------- Key: OVIRT-1561 URL: https://ovirt-jira.atlassian.net/browse/OVIRT-1561 Project: oVirt - virtualization made easy Issue Type: Task Reporter: Gil Shinar Assignee: Gil Shinar In order to support all types of git URLs and project folders, we have decided to do the following: 1) Git clone dir, ${WORKSPACE}/{dir} will always stays ${WORKSPACE}/{project} 2) git URL will be different when using default macro and custom-repo macro. for default it'll be: {git-proto}://{git-server}/{project} for custom-repo it'll be: {git-proto}://{git-server}/{gerrit_subpath}/{custom_repo} 3) trigger will also have default and custom repo. for default it'll be {project} for custom-repo it'll be {custome_repo} custom_repo can be a project name or project name + path