Replacing existing mechanism of storing BMC passwords in SysInv.
Implementing access to Barbican API in SysInv and using it to write
the passwords into a Barbican secrets. Note that a Barbican cannot
change the existing password inside its secret, so we need to remove
the old secret and create a new one in case of password update.
Another thing to mention: SysInv has to create Barbican secrets in
context of "services" project in order MTCE can read them later.
Change-Id: I7102a9662f3757c062ab310737f4ba08379d0100
Story: 2003108
Task: 27700
Signed-off-by: Alex Kozyrev <alex.kozyrev@windriver.com>