class to use sandboxed postgres

[#55932486]

Signed-off-by: Matthew Boedicker <mboedicker@pivotallabs.com>
Signed-off-by: Rob Day-Reynolds <rdayreynolds@pivotallabs.com>
Reformat postgres backup adapter.

Signed-off-by: dmitriy kalinin <dmitriy@pivotallabs.com>
Allow postgres db backup to optionally provide password to pg_dump

Signed-off-by: dmitriy kalinin <dmitriy@pivotallabs.com>
use generic socket connection to determine if sandbox processes came up

Signed-off-by: dmitriy kalinin <dmitriy@pivotallabs.com>
made more sandbox methods private

Signed-off-by: dmitriy kalinin <dmitriy@pivotallabs.com>
Properly retry in safe_find_or_create

Signed-off-by: dmitriy kalinin <dmitriy@pivotallabs.com>
correct cubocop formatting

Signed-off-by: dmitriy kalinin <dmitriy@pivotallabs.com>