show (cat) the full log instead of the tail

In the Open CI enviroment, if the package builds fails, the jenkins
artefacts are not archived thus there is no way to view the full
log ($log_path); under the latter scenario, it is better to show the
full build log instead of the tail.

Signed-off-by: Leonardo Sandoval <leonardo.sandoval@linaro.org>
Change-Id: I9813c7345d30f4c21820f5b2679b0926f4796997
1 file changed