Fix descriptions and mutual dependencies of KMIP related options for mongod and perconadecrypt

The configuration and command line option descriptions in the *.idl files require scrupulous rechecking. For now, the following bugs are found:

1. in the mongod_options_encryption.idl file, the config parameter security.kmip.serverName is defined to conflict with security.vault.ServerName but the real option name is security.vault.serverName (note server spelling);
2. in the perconadecrypt_options.idl file, the option kmipServerName conflicts with encryptionKeyFile but not with vaultServerName

There may be more ones. Please recheck the option definitions and fix found bugs.