CLOUDP-222001: Migrate to CLI's own pointer helper

[josvazg]

Proposed changes

Due to mongodb/mongodb-atlas-kubernetes#1316 the pointer API there will not be available to consumers. This change moves the Kubernetes code not to rely on that soon disappearing API and instead use the local pointer helper available in the CLI already.

There seem to be no more code affected by the above PR:

% grep -r mongodb-atlas-kubernetes/pkg/util                         
grep: bin/atlas: binary file matches
% grep -r mongodb-atlas-kubernetes/v2/pkg/util
%

Jira ticket: CLOUDP-222001

Checklist

• I have signed the MongoDB CLA

[helderjs]

LGTM if CI is happy

[gssbzn]