SDC-685: Script which migrates ldvadmin data to ldv-spec-db

SDC-685: Change REST API data/insert into insert_dataproduct. Logical names for datalocation. Move migration script to folder. Implement migration script

Closes SDC-685

ldvspec/connection/config.py

 from configparser import ConfigParser
+import os
 
 
 def read_config(section, filename='database.cfg'):
+    full_filename = os.path.join(os.path.dirname(__file__), filename)
     parser = ConfigParser()
-    try:
-        parser.read(filename)
-    except FileNotFoundError as exc:
-        raise FileNotFoundError(
-            "Configuration file with filename {0} not found".format(filename)
-        ) from exc
+    read_result = parser.read(full_filename)
+    # If file not found then parser returns just an empty list it does not raise an Exception!
+    if len(read_result) == 0:
+        raise Exception("Configuration file with filename {0} not found".format(full_filename))
 
     db_settings = {}
     if parser.has_section(section):