Switch virtual labs to Salt 2017.7

Change-Id: I2c08014f08cc08ed3cd869adc186974f11c6d313
diff --git a/classes/cluster/virtual-mcp-pike-dvr-ceph-rgw/infra/config.yml b/classes/cluster/virtual-mcp-pike-dvr-ceph-rgw/infra/config.yml
index c271a4b..d263090 100644
--- a/classes/cluster/virtual-mcp-pike-dvr-ceph-rgw/infra/config.yml
+++ b/classes/cluster/virtual-mcp-pike-dvr-ceph-rgw/infra/config.yml
@@ -2,7 +2,7 @@
 - service.git.client
 - system.linux.system.single
 - system.linux.system.single.debian
-- system.linux.system.repo.mcp.salt
+- system.linux.system.repo.mcp.apt_mirantis.saltstack
 - system.linux.system.repo.mcp.apt_mirantis.ubuntu
 - system.linux.system.repo.mcp.apt_mirantis.openstack
 - system.salt.master.pkg