Follow-up ticket for Server changes from https://jira.mongodb.org/browse/DOCS-15850

Some context:

• Mongo-tools connect via an atlas proxy if they connect to a shared tier cluster (m0/m2/m5).
• CLOUDP-124662 is restricting commands that can be run on the admin DB through an atlas proxy.

As part of TOOLS-3229, the following updates were made:

For mongorestore:

• will not restore to the admin database if connected to an atlas proxy
• will error in the following scenarios if connected to an atlas proxy: --restoreDbUsersAndRoles is specified, --db is specified as admin, or --oplogReplay is specified.

For mongodump:

• will not dump from the admin database if connected to an atlas proxy
• will error in the following scenarios if connected to an atlas proxy: --dumpDBUsersAndRoles is specified, --db is specified as admin, or --oplog is specified.