Retry install salt-minion if fails

Error to avoid
gpg: requesting key DE57BFBE from hkp server keyserver.ubuntu.com
gpg: no valid OpenPGP data found.

Change-Id: I6e8c2985b6c10c41d4fdb14d16310f2d3ba76a35
Related-Prod:#PROD-34992
diff --git a/tcp_tests/templates/shared-salt.yaml b/tcp_tests/templates/shared-salt.yaml
index 3380ec5..b7aba28 100644
--- a/tcp_tests/templates/shared-salt.yaml
+++ b/tcp_tests/templates/shared-salt.yaml
@@ -814,13 +814,13 @@
     # Restart salt-minion if it was already installed
     service salt-minion restart
   node_name: {{ ssh['node_name'] }}
-  retry: {count: 1, delay: 1}
+  retry: {count: 3, delay: 10}
   skip_fail: false
   {%- else %}
 - description: Check SSH connectivity to non-salt-minion node {{ ssh['node_name'] }}
   cmd: echo "SSH to $(hostname -f) passed"
   node_name: {{ ssh['node_name'] }}
-  retry: {count: 1, delay: 1}
+  retry: {count: 3, delay: 10}
   skip_fail: false
   {%- endif %}