[HttpFoundation] Remove Cache-Control when using https download via IE<9 (fixes #6750)
merged branch cloppy/2.1 (PR #7153)

This PR was squashed before being merged into the 2.1 branch (closes #7153).

Commits
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b2080c4 [HttpFoundation] Remove Cache-Control when using https download via IE<9 (fixes #6750)

Discussion
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[HttpFoundation] Remove Cache-Control when using https download via IE<9 (fixes #6750)

| Q             | A
| ------------- | ---
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | #6750
| License       | MIT
| Doc PR        |