Use ansible uri module instead of shell module with curl

This fixes issue #1299. According to @ktdreyer s comment in the ticket,
he fixed the web server config so also older (non-SNI) python clients
can use the uri module here.

roles/ceph-common/tasks/installs/debian_ceph_repository.yml

@@ -18,17 +18,16 @@
   changed_when: false
   when: ceph_stable
 
-# we must use curl instead of ansible's uri module because SNI support in
-# Python is only available in 2.7.9 and later, and most supported distributions
-# don't have that version, so a request to https fails.
-- name : fetch ceph development repository sources list file
-  command: "curl -L https://shaman.ceph.com/api/repos/ceph/{{ ceph_dev_branch }}/{{ ceph_dev_sha1 }}/{{ ansible_distribution | lower }}/{{ ansible_lsb.codename }}/repo"
+- name: fetch ceph development repository sources list file
+  uri:
+    url: https://shaman.ceph.com/api/repos/ceph/{{ ceph_dev_branch }}/{{ ceph_dev_sha1 }}/{{ ansible_distribution | lower }}/{{ ansible_lsb.codename }}/repo
+    return_content: yes
   register: ceph_dev_deb_repo
   when: ceph_dev
 
 - name: add ceph development repository
   apt_repository:
-    repo: "{{ ceph_dev_deb_repo.stdout }}"
+    repo: "{{ ceph_dev_deb_repo.content }}"
     state: present
   changed_when: false
   when: ceph_dev

roles/ceph-common/tasks/installs/redhat_ceph_repository.yml

@@ -15,17 +15,16 @@
     baseurl: "{{ ceph_mirror }}/rpm-{{ ceph_stable_release }}/{{ ceph_stable_redhat_distro }}/$basearch"
   when: ceph_stable
 
-# we must use curl instead of ansible's uri module because SNI support in
-# Python is only available in 2.7.9 and later, and most supported distributions
-# don't have that version, so a request to https fails.
 - name: fetch ceph development repo file
-  command: 'curl -L https://shaman.ceph.com/api/repos/ceph/{{ ceph_dev_branch }}/{{ ceph_dev_sha1 }}/{{ ansible_distribution | lower }}/{{ ansible_distribution_major_version }}/repo'
+  uri:
+    url: https://shaman.ceph.com/api/repos/ceph/{{ ceph_dev_branch }}/{{ ceph_dev_sha1 }}/{{ ansible_distribution | lower }}/{{ ansible_distribution_major_version }}/repo
+    return_content: yes
   register: ceph_dev_yum_repo
   when: ceph_dev
 
 - name: add ceph development repository
   copy:
-    content: "{{ ceph_dev_yum_repo.stdout }}"
+    content: "{{ ceph_dev_yum_repo.content }}"
     dest: /etc/yum.repos.d/ceph-dev.repo
     owner: root
     group: root