New requirement in VIM account creation

	- Added credentials field to uplaod files
	- Will convert the file content to base64 & send it in config
	  parameter with key credentials_base64

Change-Id: Ib891515377ea08b19de25d8e542113e3ded73724
Signed-off-by: SANDHYA.JS <sandhya.j@tataelxsi.co.in>