Merge pull request #4669 from edx/nedbat/retry-mongo-signing-keys

Retry when getting mongo signing keys

playbooks/roles/ad_hoc_reporting/tasks/main.yml

@@ -33,6 +33,7 @@
     id: "{{ MONGODB_APT_KEY }}"
     keyserver: "{{ MONGODB_APT_KEYSERVER }}"
     state: present
+  retries: 3
   tags:
     - install:system-requirements
 

playbooks/roles/mongo_2_6/tasks/main.yml

@@ -41,6 +41,7 @@
     id: "{{ MONGODB_APT_KEY }}"
     keyserver: "{{ MONGODB_APT_KEYSERVER }}"
     state: present
+  retries: 3
   tags:
     - install
     - install:base

playbooks/roles/mongo_3_2/tasks/main.yml

@@ -36,6 +36,7 @@
     id: "{{ MONGODB_APT_KEY }}"
     keyserver: "{{ MONGODB_APT_KEYSERVER }}"
     state: present
+  retries: 3
   tags:
     - "install"
     - "install:app-requirements"