Switch virtual labs to Salt 2017.7

Change-Id: I2c08014f08cc08ed3cd869adc186974f11c6d313
diff --git a/classes/cluster/ceph-ha/infra/init.yml b/classes/cluster/ceph-ha/infra/init.yml
index a93dccc..45acce4 100644
--- a/classes/cluster/ceph-ha/infra/init.yml
+++ b/classes/cluster/ceph-ha/infra/init.yml
@@ -1,7 +1,7 @@
 classes:
 - system.linux.system.single
 - system.linux.system.repo.mcp.extra
-- system.linux.system.repo.mcp.salt #FIXME
+- system.linux.system.repo.mcp.apt_mirantis.saltstack
 - system.linux.system.repo.saltstack.xenial
 - system.linux.system.repo.mcp.apt_mirantis.ubuntu
 - system.openssh.server.team.all
@@ -9,7 +9,6 @@
 - cluster.overrides
 parameters:
   _param:
-    salt_version: '2016.3'
     # infra service addresses
     infra_config_hostname: cfg01
     infra_config_address: 172.16.10.100