Change the way of saving instances ids for reducing the database load

Purpose/Overview:
Currently, the "instances " table contains the "json" column that stores the JSON with some metadata like updated date and deletedRecordsSupport value and a couple of other fields.
From this JSON object, only an "id" and "suppressFromDiscovery " are required for business logic. The JSON file takes about 40% of all record size.
It is required to remove this column since id is available in "instance_id" column and the "suppressFromDiscovery" value can be moved to the new column.
This will reduce the request size by 37-39%% percent.

Requirements/Scope:

1. The "json" column from instances table removed

2. The "suppressFromDiscovery" field is stored in a new column with Boolean type

Acceptance criteria:

• The "json" column removed from instances table

• Migration scripts are provided

System testing:

need access to DB.

Regression testing:

MMZ: The initial harvest has been run three times in the kiwi-bugfest environment after the hotfix was deployed on March 4th, March 5th and March 6th. Each harvest takes ~16 hours and harvests 8,057,158 records as reported in the bugfest channel. No regression found. Performance and consistency has been improved.

For the smoke test please use tests that are less taxing on the system:
C13784 List records in marc21_withholdings format with start and end date