Added an option to force cluster bootstrapping.
Added an option to force cluster bootstrapping.

Now it's possible to force the creation of required clusterId node and its parents even if some of
there nodes are already there, possibly including other clusterIds.

dflemstr/helios,udomsak/helios,mavenraven/helios,mattnworb/helios,spotify/helios,molindo/helios,stewnorriss/helios,skinzer/helios,mavenraven/helios,molindo/helios,DagensNyheter/helios,udomsak/helios,DagensNyheter/helios,gtonic/helios,kidaa/helios,DagensNyheter/helios,spotify/helios,dflemstr/helios,mbruggmann/helios,skinzer/helios,skinzer/helios,mavenraven/helios,mbruggmann/helios,mattnworb/helios,stewnorriss/helios,dflemstr/helios,molindo/helios,mbruggmann/helios,kidaa/helios,gtonic/helios,udomsak/helios,kidaa/helios,spotify/helios,gtonic/helios,mattnworb/helios,stewnorriss/helios