Update upgrade-description files.

wiki/src/upgrade/v1/Tails/1.1.2/i386/alpha/upgrades.yml

+---
+build-target: i386
+channel: alpha
+product-name: Tails
+product-version: 1.1.2

wiki/src/upgrade/v1/Tails/1.1.2/i386/alpha/upgrades.yml.pgp

+-----BEGIN PGP SIGNATURE-----
+Version: GnuPG v1.4.12 (GNU/Linux)
+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+=zw1i
+-----END PGP SIGNATURE-----

wiki/src/upgrade/v1/Tails/1.1.2/i386/stable/upgrades.yml

+---
+build-target: i386
+channel: stable
+product-name: Tails
+product-version: 1.1.2

wiki/src/upgrade/v1/Tails/1.1.2/i386/stable/upgrades.yml.pgp

+-----BEGIN PGP SIGNATURE-----
+Version: GnuPG v1.4.12 (GNU/Linux)
+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+=5tjE
+-----END PGP SIGNATURE-----