Use "address" func when it's possible

Change-Id: I8de5b5edcb4a2c78b8fd5d64bb2782ee807f6948

service/files/grafana-configure.sh.j2

@@ -14,7 +14,7 @@ curl -i -XPOST -H "Accept: application/json" -H "Content-Type: application/json"
     "type": "influxdb",
     "access": "proxy",
     "isDefault": true,
-    "url": "'"http://{{ influxdb.host }}:{{ influxdb.port.cont }}"'",
+    "url": "'"{{ address('influxdb', influxdb.port, with_scheme=True) }}"'",
     "password": "'"{{ influxdb.password }}"'",
     "user": "'"{{ influxdb.user }}"'",
     "database": "'"{{ influxdb.database }}"'"

service/files/heka-elasticsearch.toml.j2

@@ -6,7 +6,7 @@ fields = ["Timestamp", "Type", "Logger", "Severity", "Payload", "Pid", "Hostname
 
 [elasticsearch_output]
 type = "ElasticSearchOutput"
-server = "http://elasticsearch:{{ elasticsearch.port.cont }}"
+server = "{{ address('elasticsearch', elasticsearch.port, with_scheme=True) }}"
 message_matcher = "Type == 'log'"
 encoder = "elasticsearch_json_encoder"
 use_buffering = true

service/files/kibana.yml.j2

@@ -5,7 +5,7 @@ port: {{ kibana.port.cont }}
 host: "{{ network_topology["private"]["address"] }}"
 
 # The Elasticsearch instance to use for all your queries.
-elasticsearch_url: "http://elasticsearch:{{ elasticsearch.port.cont }}"
+elasticsearch_url: "{{ address('elasticsearch', elasticsearch.port, with_scheme=True) }}"
 
 # preserve_elasticsearch_host true will send the hostname specified in `elasticsearch`. If you set it to false,
 # then the host you use to connect to *this* Kibana instance will be sent.