Jira: DAISY-36 Update doc structure

This PS update doc structure according to [1].

Note: This PS also add content to doc for describing the
mapping methods for map role to discovered nodes.

[1] http://docs.opnfv.org/en/stable-danube/how-to-use-docs/documentation-guide.html?highlight=templates#document-structure-and-contribution

Change-Id: I7b2ef916753cddd8cd845abae8c7d5865c49e1ac
Signed-off-by: Zhijiang Hu <hu.zhijiang@zte.com.cn>

0 files changed, 0 insertions, 0 deletions