add terminationGracePeriodSeconds to port-ocean deployment spec

[ianianr]

Description

add terminationGracePeriodSeconds to port-ocean deployment spec

What - Add the option for setting the terminationGracePeriodSeconds attr in the port-ocean chart
Why -
How -

Type of change

Please leave one option from the following and delete the rest:

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Non-breaking change (fix of existing functionality that will not change current behavior)
• Documentation (added/updated documentation)