Merge pull request #2622 from edx/ned/use-ubuntu-keyserver

Use the ubuntu keyserver

playbooks/roles/common_vars/defaults/main.yml

@@ -44,7 +44,7 @@ COMMON_NPM_MIRROR_URL: 'http://registry.npmjs.org'
 COMMON_UBUNTU_APT_KEYSERVER: "http://keyserver.ubuntu.com/pks/lookup?op=get&fingerprint=on&search="
 
 COMMON_EDX_PPA: "deb http://ppa.edx.org {{ ansible_distribution_release }} main"
-COMMON_EDX_PPA_KEY_SERVER: "pgp.mit.edu"
+COMMON_EDX_PPA_KEY_SERVER: "keyserver.ubuntu.com"
 COMMON_EDX_PPA_KEY_ID: "69464050"
 
 #The git checkout url in most roles is constructed from these values