Modify release tools to replace certs in MMAC files.

Added support to perform a string replace of specified
dev keys with release keys when using the release tool
scripts.

Change-Id: Id0e945b0d62720c41f5ca9764a00de4bcdecaab4
Signed-off-by: rpcraig <rpcraig@tycho.ncsc.mil>
3 files changed