Switch virtual labs to Salt 2017.7

Change-Id: I2c08014f08cc08ed3cd869adc186974f11c6d313
diff --git a/classes/cluster/virtual-mcp-pike-dvr/infra/config.yml b/classes/cluster/virtual-mcp-pike-dvr/infra/config.yml
index a8e6d17..71c79a4 100644
--- a/classes/cluster/virtual-mcp-pike-dvr/infra/config.yml
+++ b/classes/cluster/virtual-mcp-pike-dvr/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.openstack
 #- system.openssh.client.lab
 - system.salt.master.pkg