sqldb+go.mod: update sqldb test methods

Update the test methods to take a `testing.TB` param instead of a
`*testing.T` so that the test functions can be used for all the graph's
tests including benchmark tests.

We also add a temporary replace so that we can make use of these changes
and also since we will soon be adding graph related schemas and queries
in this submodule that we'll want to have access to.

go.sum

@@ -375,8 +375,6 @@ github.com/lightningnetwork/lnd/kvdb v1.4.16 h1:9BZgWdDfjmHRHLS97cz39bVuBAqMc4/p
 github.com/lightningnetwork/lnd/kvdb v1.4.16/go.mod h1:HW+bvwkxNaopkz3oIgBV6NEnV4jCEZCACFUcNg4xSjM=
 github.com/lightningnetwork/lnd/queue v1.1.1 h1:99ovBlpM9B0FRCGYJo6RSFDlt8/vOkQQZznVb18iNMI=
 github.com/lightningnetwork/lnd/queue v1.1.1/go.mod h1:7A6nC1Qrm32FHuhx/mi1cieAiBZo5O6l8IBIoQxvkz4=
-github.com/lightningnetwork/lnd/sqldb v1.0.9 h1:7OHi+Hui823mB/U9NzCdlZTAGSVdDCbjp33+6d/Q+G0=
-github.com/lightningnetwork/lnd/sqldb v1.0.9/go.mod h1:OG09zL/PHPaBJefp4HsPz2YLUJ+zIQHbpgCtLnOx8I4=
 github.com/lightningnetwork/lnd/ticker v1.1.1 h1:J/b6N2hibFtC7JLV77ULQp++QLtCwT6ijJlbdiZFbSM=
 github.com/lightningnetwork/lnd/ticker v1.1.1/go.mod h1:waPTRAAcwtu7Ji3+3k+u/xH5GHovTsCoSVpho0KDvdA=
 github.com/lightningnetwork/lnd/tlv v1.3.1 h1:o7CZg06y+rJZfUMAo0WzBLr0pgBWCzrt0f9gpujYUzk=