CLDSRV-776: Fix batchDelete route to handle raftSessionId parameter from Arsenal

[dvasilas]

Fixes a bug in the batchDelete backbeat route that was missed when scality/Arsenal#2560 upgraded metadata.getBucket() callback signature to include a third parameter.

[bert-e]

Hello dvasilas,

My role is to assist you with the merge of this
pull request. Please type @bert-e help to get information
on this process, or consult the user documentation.

Available options

name	description	privileged	authored
/after_pull_request	Wait for the given pull request id to be merged before continuing with the current one.
/bypass_author_approval	Bypass the pull request author's approval	⭐
/bypass_build_status	Bypass the build and test status	⭐
/bypass_commit_size	Bypass the check on the size of the changeset TBA	⭐
/bypass_incompatible_branch	Bypass the check on the source branch prefix	⭐
/bypass_jira_check	Bypass the Jira issue check	⭐
/bypass_peer_approval	Bypass the pull request peers' approval	⭐
/bypass_leader_approval	Bypass the pull request leaders' approval	⭐
/approve	Instruct Bert-E that the author has approved the pull request.		✍️
/create_pull_requests	Allow the creation of integration pull requests.
/create_integration_branches	Allow the creation of integration branches.
/no_octopus	Prevent Wall-E from doing any octopus merge and use multiple consecutive merge instead
/unanimity	Change review acceptance criteria from one reviewer at least to all reviewers
/wait	Instruct Bert-E not to run until further notice.

Available commands

name	description	privileged
/help	Print Bert-E's manual in the pull request.
/status	Print Bert-E's current status in the pull request TBA
/clear	Remove all comments from Bert-E from the history TBA
/retry	Re-start a fresh build TBA
/build	Re-start a fresh build TBA
/force_reset	Delete integration branches & pull requests, and restart merge process from the beginning.
/reset	Try to remove integration branches unless there are commits on them which do not appear on the source branch.

Status report is not available.

[bert-e]

Incorrect fix version

The Fix Version/s in issue CLDSRV-776 contains:

• None

Considering where you are trying to merge, I ignored possible hotfix versions and I expected to find:

• 9.1.5

Please check the Fix Version/s of CLDSRV-776, or the target
branch of this pull request.

[bert-e]

Waiting for approval

The following approvals are needed before I can proceed with the merge:

• the author

• 2 peers

[dvasilas]

/approve

[bert-e]

I have successfully merged the changeset of this pull request
into targetted development branches:

• ✔️ development/9.1

The following branches have NOT changed:

• development/7.10
• development/7.4
• development/7.70
• development/8.8
• development/9.0

Please check the status of the associated issue CLDSRV-776.

Goodbye dvasilas.

The following options are set: approve