Fix ssh-agent tests (#493)

* Work around stupid ssh-agent output format.

* Workaround for Ansible 2.9.

* Old jinja2...

* Jinja2 on CentOS 6 is really annoying.

tests/integration/targets/setup_ssh_agent/meta/main.yml

@@ -5,3 +5,4 @@
 
 dependencies:
   - setup_ssh_keygen
+  - prepare_jinja2_compat

tests/integration/targets/setup_ssh_agent/tasks/main.yml

@@ -9,13 +9,22 @@
 ####################################################################
 
 - name: Start an ssh agent to use for tests
-  shell: eval $(ssh-agent)>/dev/null&&echo "${SSH_AGENT_PID};${SSH_AUTH_SOCK}"
-  register: openssh_agent_env_vars
+  shell: ssh-agent -c | grep "^setenv"
+  register: openssh_agent_stdout
+
+- name: Convert output to dictionary
+  set_fact:
+    openssh_agent_env: >-
+      {{
+        openssh_agent_stdout.stdout_lines | map('regex_replace', '^setenv ([^ ]+) ([^ ]+);', '\1')
+          | zip(openssh_agent_stdout.stdout_lines | map('regex_replace', '^setenv ([^ ]+) ([^ ]+);', '\2'))
+          | list | items2dict(key_name=0, value_name=1)
+      }}
 
 - name: Register ssh agent facts
   set_fact:
-    openssh_agent_pid: "{{ openssh_agent_env_vars.stdout.split(';')[0] }}"
-    openssh_agent_sock: "{{ openssh_agent_env_vars.stdout.split(';')[1] }}"
+    openssh_agent_pid: "{{ openssh_agent_env.SSH_AGENT_PID }}"
+    openssh_agent_sock: "{{ openssh_agent_env.SSH_AUTH_SOCK }}"
 
 - name: stat agent socket
   stat: