packer,spidermonkey: fix urls

component/packer/buildout.cfg

@@ -7,8 +7,9 @@ parts =
 recipe = slapos.recipe.build
 
 # here, two %s are used, first one is for directory name (eg. x86_64), and second one is for filename (eg. x86-64).
-url_x86-64 = https://dl.bintray.com/mitchellh/packer/packer_0.7.5_linux_amd64.zip
-url_x86 = https://dl.bintray.com/mitchellh/packer/packer_0.7.5_linux_386.zip
+url_x86-64 = https://releases.hashicorp.com/packer/${:version}/packer_${:version}_linux_amd64.zip
+url_x86 = https://releases.hashicorp.com/packer/${:version}/packer_${:version}_linux_386.zip
+version = 0.7.5
 
 # supported architectures md5sums
 md5sum_x86 = a545108a0ccfde7c1e74de6c4e6fdded

component/spidermonkey/buildout.cfg

@@ -4,7 +4,7 @@ parts = spidermonkey
 
 [spidermonkey-1.7]
 recipe = slapos.recipe.build
-url = ftp://ftp.mozilla.org/pub/mozilla.org/js/js-1.7.0.tar.gz
+url = http://ftp.mozilla.org/pub/mozilla.org/js/js-1.7.0.tar.gz
 md5sum = 5571134c3863686b623ebe4e6b1f6fe6
 slapos_promise =
   directory:include/