Clean out a pre-existing secret if Pool.initialize_wlb is called second time without deconfigure having been called in between.
Clean out a pre-existing secret if Pool.initialize_wlb is called second time
without deconfigure having been called in between.

Signed-off-by: Magnus Therning <d563053cb0ea35046fc6d1a4be0e7fe773f2d276@citrix.com>

djs55/xcp-networkd,koushikcgit/xcp-rrdd,djs55/xcp-rrdd,simonjbeaumont/xcp-rrdd,koushikcgit/xcp-rrdd,johnelse/xcp-rrdd,robhoes/squeezed,sharady/xcp-networkd,koushikcgit/xcp-networkd,sharady/xcp-networkd,koushikcgit/xcp-rrdd,johnelse/xcp-rrdd,simonjbeaumont/xcp-rrdd,djs55/squeezed,koushikcgit/xcp-networkd,djs55/xcp-networkd,djs55/xcp-rrdd