build standalone before doing e2e-tests

problem: old migration queries are slow

remove old migrations that were only ever needed by me

problem: GetVulnerabilities is slow

create a partial index on the host_creds table where result is not
blank.

This drops the query GetVulnerabilities runs from a second or two to
almost zero.

properly pass the version to the ldflags

problem: json report is missing fields.

go json encoder ignores conflicting fields, which was preventing
Hostport from showing up. Also some of the fields weren't even
being selected AND the hostport conflict also existed when the join
results were deserialized.  To fix that, fully qualify the 'host'
fields.

bump version to 0.10

Bump version to 0.9

bump version to 0.8

bump version

add version command, bump to 0.6