Set logger to debug in base_external_dbsource (#549)

base_external_dbsource/base_external_dbsource.py

@@ -41,30 +41,30 @@ try:
         CONNECTORS.append(('mssql', 'Microsoft SQL Server'))
         assert pymssql
     except (ImportError, AssertionError):
-        _logger.info('MS SQL Server not available. Please install "pymssql"\
+        _logger.debug('MS SQL Server not available. Please install "pymssql"\
                       python package.')
     try:
         import MySQLdb
         CONNECTORS.append(('mysql', 'MySQL'))
         assert MySQLdb
     except (ImportError, AssertionError):
-        _logger.info('MySQL not available. Please install "mysqldb"\
+        _logger.debug('MySQL not available. Please install "mysqldb"\
                      python package.')
 except:
-    _logger.info('SQL Alchemy not available. Please install "slqalchemy"\
+    _logger.debug('SQL Alchemy not available. Please install "slqalchemy"\
                  python package.')
 try:
     import pyodbc
     CONNECTORS.append(('pyodbc', 'ODBC'))
 except:
-    _logger.info('ODBC libraries not available. Please install "unixodbc"\
+    _logger.debug('ODBC libraries not available. Please install "unixodbc"\
                  and "python-pyodbc" packages.')
 
 try:
     import cx_Oracle
     CONNECTORS.append(('cx_Oracle', 'Oracle'))
 except:
-    _logger.info('Oracle libraries not available. Please install "cx_Oracle"\
+    _logger.debug('Oracle libraries not available. Please install "cx_Oracle"\
                  python package.')