HttpTest: Update cURL constants array

The mediawiki-core-regression-hhvm-master test for I21747063 found
failures for some constants provided by the provideCurlConstants()
array.

https://integration.wikimedia.org/ci/job/mediawiki-core-regression-hhvm-master/2072/console

I have commented out the failures that occur in the current mw
HHVM 3.3.0 environment in order for the test to pass. none of the
commented out constants appear in the mw core code.

PHP 5.6.0 removed several cURL constants http://php.net/manual/en/curl.constants.php.
I have commented out those constants and verified that they do not
exist in the mw core code.

Bug: 71729
Change-Id: I30c5e78eacf19071aaf44834ca188172f082e161