Fix target for prometheus state

Change-Id: I193d5bf72eaae05343379d27814263546b8b2c26
diff --git a/tcp_tests/templates/cookied-mcp-ocata-dop-sl2/sl.yaml b/tcp_tests/templates/cookied-mcp-ocata-dop-sl2/sl.yaml
index dddb5fd..276412e 100644
--- a/tcp_tests/templates/cookied-mcp-ocata-dop-sl2/sl.yaml
+++ b/tcp_tests/templates/cookied-mcp-ocata-dop-sl2/sl.yaml
@@ -161,7 +161,7 @@
 
 # Configure the services running in Docker Swarm
 - description: Install prometheus alertmanager
-  cmd: salt --hard-crash --state-output=mixed --state-verbose=False -C 'I@docker:swarm' state.sls prometheus -b 1
+  cmd: salt --hard-crash --state-output=mixed --state-verbose=False -C 'I@prometheus:server' state.sls prometheus -b 1
   node_name: {{ HOSTNAME_CFG01 }}
   retry: {count: 1, delay: 10}
   skip_fail: false