Fix market close for Cboe indices

[JosueNina]

Description

Sets the market close of 21 Cboe indices to 15:15 CT (16:15 ET), the end of their regular session, in line with VIX, VIX3M and SPX. Affected indices: VIX9D, VIX6M, VIX1D, VIX1Y, VVIX, RVX, VXN, VXD, VWA, VWB, VXTH, COR1M, COR3M, COR6M, COR9M, COR1Y, COR30D, BXD, BXM, BXN and CLL.

Related Issue

Motivation and Context

These entries closed at 15:00 CT (16:00 ET), so the minute bars between 16:00 and 16:15 ET were dropped as outside market hours and the hour and daily bars were consolidated without them. Cboe's official close for these indices is the 16:15 ET value, so our daily bars did not match Cboe or Yahoo. The closing value is published at 16:15:01 ET, so matching it exactly also needs the data converter to fold it into the last bar of the session, which is outside the scope of this PR.

Requires Documentation Change

N/A

How Has This Been Tested?

It was tested using unit tests.

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• Refactor (non-breaking change which improves implementation)
• Performance (non-breaking change which improves performance. Please add associated performance test and results)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Non-functional change (xml comments/documentation/etc)

Checklist:

• My code follows the code style of this project.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• All new and existing tests passed.
• My branch follows the naming convention bug-<issue#>-<description> or feature-<issue#>-<description>