* Swap to fmt.Errorf in jobobject package

This change swaps to fmt.Errorf for wrapped errors in the jobobject package
from errors.Wrap. We'd had talks of moving this code to winio where we've
removed our pkg/errors dependency so this would make the port easier.

Signed-off-by: Daniel Canter <dcanter@microsoft.com>
(cherry picked from commit ccec73f)
Signed-off-by: Daniel Canter <dcanter@microsoft.com>

…rosoft#1307)

Previously we had our own definition for GetQueuedCompletionStatus as x/sys/windows
had an incorrect definition for it. This was remedied a bit ago in this change
golang/sys@683adc9
so we're alright to remove our own at this point.

Signed-off-by: Daniel Canter <dcanter@microsoft.com>
(cherry picked from commit 4721411)
Signed-off-by: Daniel Canter <dcanter@microsoft.com>

This change adds in functionality to query statistics directly in the shim instead of reaching out to HCS. One of the main motivators behind this was poor performance for tallying up the private working set total for the container in HCS.

HCS calls NtQuerySystemInformation with the class SystemProcessInformation which returns an array containing system information for every process running on the machine. They then grab the pids that are running in the container and filter down the entries in the array to only what's running in that silo and start tallying up the total. This doesn't work well as performance should get worse if more processes are running on the machine in general and not just in the container. All of the additional information besides the WorkingSetPrivateSize field is ignored as well which isn't great and is wasted work to fetch.

HCS only let's you grab statistics in an all or nothing fashion, so we can't just grab the private working set ourselves and ask for everything else separately. We can open the silo ourselves and do the same queries for the rest of the info, as well as calculating the private working set in a more efficient manner by:

1. Find the pids running in the silo
2. Get a process handle for every process (only need
PROCESS_QUERY_LIMITED_INFORMATION access)
3. Call NtQueryInformationProcess on each process with the class
ProcessVmCounters
4. Tally up the total using the field PrivateWorkingSetSize in
VM_COUNTERS_EX2.

This change additionally:
- Changes the jobcontainers package to use this new way to calculate the
private working set.
- Change the query the StorageStats method in the jobobject package uses
to grab IO counters to match what HCS queries.

Signed-off-by: Daniel Canter <dcanter@microsoft.com>
(cherry picked from commit 4a1216a)
Signed-off-by: Daniel Canter <dcanter@microsoft.com>

Previous cherry-picked commits brought in changes from other commits that were
not cherry-picked and these changes end up in /test/vendor because of our
'go mod vendor' flow. This just ensures our verify-test-vendor CI step will
pass by re-vendoring what is actually present in the repo.

Signed-off-by: Daniel Canter <dcanter@microsoft.com>