Support uploading files in modify image role

Support for uploading files to image.

Change-Id: I5cf1959437097f410cc36e1a1536141bfc9da325

roles/modify-image/README.md

@@ -19,6 +19,8 @@ Role Variables
 
 * `image_to_modify` -- the image that virt-customize will operate on
 * `modify_script` -- the script that will be run inside the image
+* `modify_image_upload_files` -- list of src/dest of files to upload to image
+  (files are uploaded before running the script)
 * `modify_image_extract_list` -- list of artifacts to extract after the image
    is modified
 * `modify_image_working_dir` -- directory containing image and script. This is
@@ -71,6 +73,31 @@ Example Usage
   roles:
     - modify-image
 
+- name: Upload files to image
+  hosts: virthost
+  vars:
+    image_to_modify: "{{ working_dir }}/undercloud.qcow2"
+    modify_image_upload_files:
+      - src: /tmp/file_to_upload.tar.gz
+        dest: /home/user/renamed_file.tar.gz
+      - src: /home/local_user/file
+        dest: /home/image_user/
+  roles:
+    - modify-image
+
+- name: Upload files to image and run script
+  hosts: virthost
+  vars:
+    image_to_modify: "{{ working_dir }}/undercloud.qcow2"
+    modify_image_upload_files:
+      - src: /tmp/file_to_upload.tar.gz
+        dest: /home/user/renamed_file.tar.gz
+      - src: /home/local_user/file
+        dest: /tmp/
+    modify_script: "{{ working_dir }}/undercloud_convert.sh"
+  roles:
+    - modify-image
+
 ```
 
 License

roles/modify-image/defaults/main.yml

@@ -6,6 +6,9 @@
 # image_to_modify:
 # modify_script:
 
+# The upload list of files
+modify_image_upload_files: []
+
 # The extract list defaults to empty list
 modify_image_extract_list: []
 

roles/modify-image/tasks/main.yml

@@ -5,7 +5,7 @@
     msg:
         "In order to use this role image_to_modify and modify_script must be
          provided."
-  when: image_to_modify is not defined or modify_script is not defined
+  when: image_to_modify is not defined or (modify_script is not defined and modify_image_upload_files == [])
 
 - name: ensure libguestfs is installed
   yum: name=libguestfs-tools-c state=latest
@@ -27,21 +27,30 @@
   set_fact: vc_args="{{ vc_args }} -x"
   when: modify_image_vc_trace|bool
 
+- name: virt-customize args --> upload files
+  set_fact: vc_args="{{ vc_args }} --upload {{ item.src }}:{{ item.dest }}"
+  with_items: "{{ modify_image_upload_files }}"
+
+- name: virt-customize args --> modify script
+  set_fact: vc_args="{{ vc_args }} --run {{ modify_script }}"
+  when: modify_script is defined
+
 - name: Run virt-customize on the provided image
-  shell: virt-customize {{ vc_args }}
-         -a {{ image_to_modify }}
-         --run {{ modify_script }}
-         > {{ modify_script }}.log 2>&1
+  shell: >
+    virt-customize {{ vc_args }}
+    -a {{ image_to_modify }}
+    > {{ modify_script|default('modify_image') }}.log 2>&1
   environment:
     LIBGUESTFS_BACKEND: direct
   args:
     chdir: "{{ modify_image_working_dir }}"
 
 - name: Extract artifacts from the image
-  shell: virt-copy-out
-         -a {{ image_to_modify }}
-         {{ item }}
-         {{ modify_image_working_dir }}
+  shell: >
+    virt-copy-out
+    -a {{ image_to_modify }}
+    {{ item }}
+    {{ modify_image_working_dir }}
   environment:
       LIBGUESTFS_BACKEND: direct
   args: