forall: Silently skip missing projects

If a project is missing locally, it might be OK to skip over it
and continue running the same command in other projects.

Bug: REPO-43
Change-Id: I64f97eb315f379ab2c51fc53d24ed340b3d09250
Signed-off-by: Shawn O. Pearce <sop@google.com>
1 file changed