ENG-5793: Add checks to the RestoreAgent that, on recover, verify that we find table data files for all of the tables listed in the snapshot digest.  Also, generate a useful failure message when this failure occurs, rather than generating a cryptic message about missing the catalog.
ENG-5793: Add checks to the RestoreAgent that, on recover, verify that
we find table data files for all of the tables listed in the snapshot
digest.  Also, generate a useful failure message when this failure
occurs, rather than generating a cryptic message about missing the
catalog.

paulmartel/voltdb,zuowang/voltdb,VoltDB/voltdb,simonzhangsm/voltdb,flybird119/voltdb,paulmartel/voltdb,VoltDB/voltdb,migue/voltdb,paulmartel/voltdb,wolffcm/voltdb,kumarrus/voltdb,ingted/voltdb,deerwalk/voltdb,migue/voltdb,wolffcm/voltdb,zuowang/voltdb,creative-quant/voltdb,deerwalk/voltdb,VoltDB/voltdb,creative-quant/voltdb,ingted/voltdb,creative-quant/voltdb,flybird119/voltdb,flybird119/voltdb,wolffcm/voltdb,VoltDB/voltdb,zuowang/voltdb,kumarrus/voltdb,wolffcm/voltdb,zuowang/voltdb,ingted/voltdb,flybird119/voltdb,migue/voltdb,creative-quant/voltdb,simonzhangsm/voltdb,zuowang/voltdb,simonzhangsm/voltdb,ingted/voltdb,simonzhangsm/voltdb,paulmartel/voltdb,ingted/voltdb,kumarrus/voltdb,kumarrus/voltdb,paulmartel/voltdb,deerwalk/voltdb,zuowang/voltdb,deerwalk/voltdb,zuowang/voltdb,creative-quant/voltdb,deerwalk/voltdb,deerwalk/voltdb,paulmartel/voltdb,flybird119/voltdb,migue/voltdb,wolffcm/voltdb,kumarrus/voltdb,ingted/voltdb,creative-quant/voltdb,VoltDB/voltdb,zuowang/voltdb,creative-quant/voltdb,migue/voltdb,simonzhangsm/voltdb,simonzhangsm/voltdb,migue/voltdb,paulmartel/voltdb,paulmartel/voltdb,deerwalk/voltdb,flybird119/voltdb,wolffcm/voltdb,simonzhangsm/voltdb,VoltDB/voltdb,wolffcm/voltdb,creative-quant/voltdb,ingted/voltdb,wolffcm/voltdb,kumarrus/voltdb,flybird119/voltdb,ingted/voltdb,simonzhangsm/voltdb,deerwalk/voltdb,VoltDB/voltdb,migue/voltdb,kumarrus/voltdb,migue/voltdb,kumarrus/voltdb,flybird119/voltdb