refactor configure structure

Change-Id: I1742b31089bfe5422b88a015b8891c4d20b57589
Bootsrap with CCCP

Change-Id: I96e91180f06b87e92ac1acee2c44dead1a2503af
CCBC-234 Use CCCP protocol to update vbucket configuration

Change-Id: I1fb24cee6ad9c6c4c77f4ac9f192215b846fe488
CCBC-234 Add lcb_cntl command to determine source of configuration

Change-Id: I933558ffe4a20eedca6e03ee7bf3d2dfe0e11ab0