Updated package metadata for 1.2.1 release.
Updated package metadata for 1.2.1 release.

Updated package to 1.2.1 as 1.2.0 package was broken
and would not install.

Change-Id: Ied125cb9b51b1ad5a6a27bca8bfcf7f3458b8a34
Reviewed-on: http://review.couchbase.org/29339
Reviewed-by: Matt Ingenthron <1fa2ef4755a9226cb9a0a4840bd89b158ac71391@couchbase.com>
Tested-by: Brett Lawson <c8c4369773d7d7226e031f0c4af62e3f38a08510@gmail.com>

couchbase/php-ext-couchbase,couchbase/php-ext-couchbase,couchbase/php-ext-couchbase,couchbase/php-ext-couchbase,couchbase/php-ext-couchbase