There is wrong assumption that when server pillar is
defined the node is galera master, we need to check
actually that it is enabled.

Change-Id: I594c3fbdb1dfc829e7750c2fb1a6d4f5593074b2

The tag is equal to the address of the server which is quite useless
when using a Unix socket address.

Change-Id: Ia87c30f8ff2176f923982d70b712b10ec6e97f56
Depends-On: I538dbb24602a8ad4aece0a74445db47810099bb9

Change-Id: Iec2d27cc4fdab9ba7772e9c26be66ba54f5aadfc
Depends-On: Ice4f38abfb0d870c56763dfeda2140032fa752a1