NOISSUE - Upgrade influxdb and postgres docker images (#1341)

* NOISSUE - Upgrade influxdb and postgres docker images

Signed-off-by: Manuel Imperiale <manuel.imperiale@gmail.com>

* Upgrade grafana version

Signed-off-by: Manuel Imperiale <manuel.imperiale@gmail.com>

* Upgrade influxdb to 1.8.3-alpine

Signed-off-by: Manuel Imperiale <manuel.imperiale@gmail.com>

docker/addons/bootstrap/docker-compose.yml

@@ -17,7 +17,7 @@ volumes:
 
 services:
   bootstrap-db:
-    image: postgres:10.2-alpine
+    image: postgres:10.8-alpine
     container_name: mainflux-bootstrap-db
     restart: on-failure
     environment:

docker/addons/certs/docker-compose.yml

@@ -18,7 +18,7 @@ volumes:
 
 services:
   certs-db:
-    image: postgres:10.2-alpine
+    image: postgres:10.8-alpine
     container_name: mainflux-certs-db
     restart: on-failure
     environment:

docker/addons/influxdb-writer/docker-compose.yml

@@ -18,7 +18,7 @@ volumes:
 
 services:
   influxdb:
-    image: influxdb:1.6.4-alpine
+    image: influxdb:1.8.3-alpine
     container_name: mainflux-influxdb
     restart: on-failure
     environment:
@@ -58,7 +58,7 @@ services:
       - ./config.toml:/config.toml
 
   grafana:
-    image: grafana/grafana:5.1.3
+    image: grafana/grafana:7.3.7
     container_name: mainflux-grafana
     depends_on:
       - influxdb

docker/addons/postgres-writer/docker-compose.yml

@@ -19,7 +19,7 @@ volumes:
 
 services:
   postgres:
-    image: postgres:10.2-alpine
+    image: postgres:10.8-alpine
     container_name: mainflux-postgres
     restart: on-failure
     environment: