Get keyStorePassword from file

Get keyStorePassword from file

Instead of storing actual passsword in config file's keyStorePassword
get the path to the password file from keyStorePassword and create a
new config file with actual password in keyStorePassword then
continue with normal application startup
This also has bug fix for log errors per DCAEGEN2-2086; where logs
dir and files are not getting created due to inventory user not
having permissions to create dir/logs under /opt/logs/

Issue-ID: DCAEGEN2-2017
Issue-ID: DCAEGEN2-2086

Signed-off-by: Shadi Haidar <sh1986@att.com>
Change-Id: I45b5867e9f73b9355c0fa2a0be18cf610291511d
Signed-off-by: Shadi Haidar <sh1986@att.com>