Documentation to follow.

look for VMs that need a reload setup.

Also allow pcvm for type.

CH credential.

When set, randomizes the order of nodes before making pclasses. This
has the effect of putting different nodes at the 'front' of the pclass,
The idea is to avoid 'hot spots' of nodes that get over-used simply
because they happen to appear earlier in the .ptop file.

NB: because STL seems to use a different source of randomness, using
this with '-s' to set a seed does *not* make assign deterministic.

table instead.

iface, leave the lannode side alone. This is probably the cause
of infrequent swapmod probems with experiments that have lans.

Inster node_auxtypes entry for the capacity.
Minor bug fix.

Also add a test script helper for stitching.