Pin salt-master and salt-minion versions to 2016.3.4
diff --git a/tcp_tests/templates/underlay/mk22-qa-lab01--user-data1604.yaml b/tcp_tests/templates/underlay/mk22-qa-lab01--user-data1604.yaml
index ff6539a..62e6372 100644
--- a/tcp_tests/templates/underlay/mk22-qa-lab01--user-data1604.yaml
+++ b/tcp_tests/templates/underlay/mk22-qa-lab01--user-data1604.yaml
@@ -46,11 +46,13 @@
    - echo "Preparing base OS"
    - which wget >/dev/null || (apt-get update; apt-get install -y wget)
 
-   - echo "deb [arch=amd64] http://apt.tcpcloud.eu/nightly/ xenial main security tcp tcp-salt" > /etc/apt/sources.list
+   - echo "deb [arch=amd64] http://apt.tcpcloud.eu/nightly/ xenial main security extra tcp tcp-salt" > /etc/apt/sources.list
    - wget -O - http://apt.tcpcloud.eu/public.gpg | apt-key add -
    # saltstack repo is for minions that have the same version in the xenial and trusty (2016.3.3)
-   - echo "deb http://repo.saltstack.com/apt/ubuntu/16.04/amd64/latest xenial main" > /etc/apt/sources.list.d/saltstack.list
-   - wget -O - https://repo.saltstack.com/apt/ubuntu/16.04/amd64/latest/SALTSTACK-GPG-KEY.pub | apt-key add -
+   #- echo "deb http://repo.saltstack.com/apt/ubuntu/16.04/amd64/latest xenial main" > /etc/apt/sources.list.d/saltstack.list
+   #- wget -O - https://repo.saltstack.com/apt/ubuntu/16.04/amd64/latest/SALTSTACK-GPG-KEY.pub | apt-key add -
+   - echo "deb http://repo.saltstack.com/apt/ubuntu/16.04/amd64/2016.3 xenial main" > /etc/apt/sources.list.d/saltstack.list
+   - wget -O - https://repo.saltstack.com/apt/ubuntu/16.04/amd64/2016.3/SALTSTACK-GPG-KEY.pub | apt-key add -
 
    - apt-get clean
    - apt-get update