TT-13449 Fixed template name of opentelemetry caFilePath

[dklenke]

Description

Changes the named template included in the tyk-gateway deployment yaml to the name defined in _helpers.tpl.

Related Issue

Closes #343

Motivation and Context

When setting a custom CA file for opentelemetry with the tyk-gateway helm chart this value was lost.

Test Coverage For This Change

Screenshots (if appropriate)

Types of changes

• 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 change)
• Refactoring or add test (improvements in base code or adds test coverage to functionality)
• Documentation updates or improvements.

Checklist

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• My change requires a change to the documentation.
  • I have manually updated the README(s)/documentation accordingly.
• I have updated the documentation accordingly.
• I have added tests to cover my changes.
• All new and existing tests passed.

[komalsukhani]

@dklenke Thank you for your contribution! PR looks great.
Can you resolve the lint errors? Just have to remove trailing spaces.