layerman: allow to change branch/uri in check_layer
layerman: allow to change branch/uri in check_layer

Signed-off-by: Martin Jansa <516df3ff67e1fa5d153800b15fb204c0a1a389dc@gmail.com>

wwright2/angstrom-setup.methode,Angstrom-distribution/setup-scripts,Ambertec/setup-scripts