Add initial support for adding Jenkins slaves

jenkins.yml

@@ -19,6 +19,16 @@
     sudo_defaults:
       - defaults: '!requiretty'
 
+  tasks:
+    - name: Set facts for later use
+      set_fact:
+        jenkins_jar_location: "{{ jenkins_jar_location }}"
+        jenkins_hostname: "{{ jenkins_hostname }}"
+        jenkins_http_port: "{{ jenkins_http_port }}"
+        jenkins_url_prefix: "{{ jenkins_url_prefix }}"
+        jenkins_admin_username: "{{ jenkins_admin_username }}"
+        jenkins_admin_password: "{{ jenkins_admin_password }}"
+
   post_tasks:
     - name: Add jenkins user to wheel group
       user:
@@ -253,3 +263,45 @@
       authorized_key:
         user: root
         key: "{{ jenkins_slave_pub.stdout }}"
+
+- hosts: jenkins_master
+  become: yes
+  tags:
+    - jenkins_slave_test
+
+  vars_files:
+    - ~/.ansible/vars/cira_vars.yml
+
+  tasks:
+    # TODO: This is kind of hacky since it doesn't deal with multiple jenkins
+    #       slaves. We'll need to circle back and make this deal with lists.
+    - name: Check if our node already exists
+      ignore_errors: true
+      command: >
+        java -jar {{ jenkins_jar_location }} -s http://{{ jenkins_hostname }}:{{ jenkins_http_port }}{{ jenkins_url_prefix | default('') }}/
+        get-node {{ slave_name }}
+        --username {{ jenkins_admin_username }}
+        --password {{ jenkins_admin_password }}
+      register: jenkins_cli_get_node
+
+    - debug: var=jenkins_cli_get_node
+
+    - name: Deploy template for Jenkins slave node
+      template:
+        src: jenkins_slave.j2
+        dest: /tmp/jenkins_slave_{{ slave_name }}.tmpl
+      when: jenkins_cli_get_node.stderr is defined and jenkins_cli_get_node.stderr != ""
+
+    - name: Add Jenkins slave node to the master
+      shell: >
+        java -jar {{ jenkins_jar_location }} -s http://{{ jenkins_hostname }}:{{ jenkins_http_port }}{{ jenkins_url_prefix | default('') }}/
+        create-node {{ slave_name }}
+        --username {{ jenkins_admin_username }}
+        --password {{ jenkins_admin_password }} < /tmp/jenkins_slave_{{ slave_name }}.tmpl
+      when: jenkins_cli_get_node.stderr is defined and jenkins_cli_get_node.stderr != ""
+
+    - name: Remove template for Jenkins slave node
+      file:
+        name: /tmp/jenkins_slave_{{ slave_name }}.tmpl
+        state: absent
+      when: slave_name is defined and jenkins_cli_get_node.stderr != ""