Changes for how we distribute the initial set of imageids and osids.
* install/dump-descriptors <filename> will write out a set of insert statements for the images and os_info table, slightly munged. In fact, what I do is create temporary tables called temp_images and temp_os_info, clean them a bit, and then write out the insert statements to load them into new tables of the same name. There are some arrays at the top of this script that says what images and osids to write out. * install/load-descriptors <filename> takes the output of dump-descriptors, creates the two temporary tables and loads the data into them. Then it (optionally) updates those tables with the local indicies of elabman and the emulab-ops project and group. Then it computes an osidtoimageid table for all class='pc' types. On a new testbed this is a reasonable approach, in my opinion. Next it takes the contents of the two temp tables and moves them across to the actual tables. * install/descriptors.sql is the current data set which has everything contained in sql/database-fill-supplemental.sql and install/images/*