[COMMON] Allow '-' in commit topic

Some components may have `-` in their topic title. Thus it should be
allowed.
Second and other "topics" can now also use lower case letters.

Issue-ID: OOM-2648
Signed-off-by: Sylvain Desbureaux <sylvain.desbureaux@orange.com>
Change-Id: I0e12fdeac3788800755926aec3ffd425c87d6f98
(cherry picked from commit 7153bad439120e152d15a305d3da8885ff7babf8)
1 file changed