Introduce SALT_VERSION var

As we plan to move to salt 2017.7 and at the same time
we need to check 2016.3 as well (and upgrdae path), introduce
new var SALT_VERSION with default value 2016.3

Also update repo path to salt from mirror mirantis and clened up
commented hacks

Reelated: PROD-19373

Change-Id: I3c327aa4b6369750f5bdabe1b96cb52ab5770f03
diff --git a/tcp_tests/templates/virtual-mcp-ocata-ceph-offline/run_test.sh b/tcp_tests/templates/virtual-mcp-ocata-ceph-offline/run_test.sh
index a26ac65..4ceccb4 100755
--- a/tcp_tests/templates/virtual-mcp-ocata-ceph-offline/run_test.sh
+++ b/tcp_tests/templates/virtual-mcp-ocata-ceph-offline/run_test.sh
@@ -12,6 +12,8 @@
 export LAB_CONFIG_NAME=virtual-mcp-ocata-ceph-offline
 export CLUSTER_NAME=virtual-mcp-ocata-ovs-ceph-local
 export REPOSITORY_SUITE=stable
+export DISTROS_CODENAME=xenial
+export SALT_VERSION=2016.3
 
 export TEST_GROUP=test_ocata_ceph_all_ovs_install
 export RUN_TEMPEST=true
@@ -32,6 +34,8 @@
 export SALT_FORMULAS_REPO=https://gerrit.mcp.mirantis.local.test/salt-formulas
 export FORMULA_REPOSITORY="deb [arch=amd64] http://apt.mirantis.local.test/ubuntu-xenial ${REPOSITORY_SUITE} salt extra"
 export FORMULA_GPG="http://apt.mirantis.local.test/public.gpg"
+export SALT_REPOSITORY = "deb [arch=amd64] http://mirror.mirantis.local.test/" + REPOSITORY_SUITE+ "/saltstack-" + SALT_VERSION+ "/${DISTRIB_CODENAME} ${DISTRIB_CODENAME} main"
+
 export SALT_REPOSITORY="deb [arch=amd64] http://apt.mirantis.local.test/ubuntu-xenial/ ${REPOSITORY_SUITE} salt/2016.3 main"
 export SALT_GPG="http://apt.mirantis.local.test/public.gpg"
 export UBUNTU_REPOSITORY="deb http://mirror.mcp.mirantis.local.test/ubuntu xenial main universe restricted"