Included python osm-im dependency, LICENSE added to RO package, pyang and pyangbind installed via pip in postinst

Change-Id: I2c46c7c48076fc299133a9bd5f147e009a3ae0c1
Signed-off-by: garciadeblas <gerardo.garciadeblas@telefonica.com>
diff --git a/Makefile b/Makefile
index 8330b74..d312845 100644
--- a/Makefile
+++ b/Makefile
@@ -37,6 +37,7 @@
 	cp -r instance-scenarios build/osm_ro
 	cp -r scripts build/osm_ro
 	cp -r database_utils build/osm_ro
+	cp LICENSE build/osm_ro
 
 connectors: prepare
 	# python-novaclient is required for that