Use source for bash scripts
Using a subshell causes environment variables to be lost in the pipeline.
Switch to source
so that the current shell is modified instead. This
maintains environment variables for later parts of the pipeline.
Recent commits make it easy to find pipeline scripts with
PIPELINE_DEFINITION_DIR
. Switch to using that for getting the path
to various scripts.
Signed-off-by: Major Hayden major@redhat.com