Small refactoring of the Makefile

Some clean up, some reformatting for better readability and some additions like environment variables that are new considered:

• TANGO_HOST
• NETWORK_MODE
• MYSQL_HOST

CDB/thomas_arm64_ConfigDb.json

+{
+    "servers": {
+        "PCC": {
+            "LTS": {
+                "PCC": {
+                    "LTS/PCC/1": {
+                        "properties": {
+                            "OPC_Server_Name": [
+                                "arm2"
+                            ]
+                        }
+                    }
+                }
+            }
+        },
+        "SDP": {
+            "LTS": {
+                "SDP": {
+                    "LTS/SDP/1": {
+                        "properties": {
+                            "OPC_Server_Name": [
+                                "okeanos"
+                            ]
+                        }
+                    }
+                }
+            }
+        }
+    }
+}