Replaced some apt calls by apt-get calls

Change-Id: Ia9d4f7d60bbcf6d730e0b0cfc802728ed9d23a9d
Signed-off-by: garciadeblas <gerardo.garciadeblas@telefonica.com>
diff --git a/jenkins/host/start_build b/jenkins/host/start_build
index 02bfcc2..f7ada68 100755
--- a/jenkins/host/start_build
+++ b/jenkins/host/start_build
@@ -48,7 +48,7 @@
 	if [[ $OSM_BASE_IMAGE =~ $RE ]]; then
 		container_exec $OSM_BUILD_CONTAINER yum -y install git tar make sudo
 	else
-		container_exec $OSM_BUILD_CONTAINER apt -y install git realpath make sudo 
+		container_exec $OSM_BUILD_CONTAINER apt-get -y install git realpath make sudo 
 	fi
 	if [ ${OSM_USE_LOCAL_DEVOPS:-false} ]; then
 		container_push_devops $OSM_BUILD_CONTAINER