BUG #14507: Update start-scripts/linux for missing LSG tags and overrides

The following bug has been logged on the website:

Bug reference: 14507
Logged by: HM Yoong
Email address: yoonghm@gmail.com
PostgreSQL version: 9.6.1
Operating system: Linux
Description:

After

## EDIT FROM HERE

Insert

### BEGIN INIT INFO
# Provides: postgres
# Required-Start:
# Required-Stop:
# Default-Start: 2 3 4 5
# Default-Stop: 0 1 6
# Short-Description: PostgreSQL Database
# Description:: Start PostgreSQL database processes
### END INIT INFO

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