deployments: Allow users to print whole logs or just follow them

Users can call the script with "-f" or "--follow" in order to follow the
latest lines (like with system tool "tail -f"), of not provide this
argument to obtain the whole contents of the logs.

openvidu-server/deployments/ce/docker-compose/openvidu

@@ -245,8 +245,8 @@ case $1 in
     ;;
 
   logs)
-    case $2 in
+    case "${2-}" in
-      "-f")
+      --follow|-f)
         docker-compose logs -f --tail 10 openvidu-server
         ;;
       *)

openvidu-server/deployments/enterprise/master-node/openvidu

@@ -254,8 +254,15 @@ case $1 in
     ;;
 
   logs)
+    case "${2-}" in
+      --follow|-f)
         docker-compose logs -f --tail 10 openvidu-server
         ;;
+      *)
+        docker-compose logs openvidu-server
+        ;;
+    esac
+    ;;
 
   upgrade)
     if [ -z "$2" ]; then

openvidu-server/deployments/pro/docker-compose/media-node/media_node

@@ -259,8 +259,8 @@ case $1 in
     ;;
 
   logs)
-    case $2 in
+    case "${2-}" in
-      "-f")
+      --follow|-f)
         docker-compose logs -f --tail 10 media-node-controller
         ;;
       *)

openvidu-server/deployments/pro/docker-compose/openvidu-server-pro/openvidu

@@ -274,8 +274,15 @@ case $1 in
     ;;
 
   logs)
+    case "${2-}" in
+      --follow|-f)
         docker-compose logs -f --tail 10 openvidu-server
         ;;
+      *)
+        docker-compose logs openvidu-server
+        ;;
+    esac
+    ;;
 
   upgrade)
     if [ -z "$2" ]; then