Bug 528940 - Execute pre/post build step

Execute the pre and post build steps as part of the build when using
the internal builder in parallel mode.

Change-Id: I840da0d7025597dc5b3edc1bb54a5ca45b6e2e86
Signed-off-by: Torbjörn Svensson <torbjorn.svensson@st.com>
Signed-off-by: Samuel Hultgren <samuel.hultgren@st.com>
2 files changed