M3-cli

* Changes to the command `activate-platform-service`:
* Added the `interactive-mode` optional parameter for explicit activation of interactive mode.
* Interactive mode now activates on either of two conditions:
* The `interactive-mode` flag is explicitly provided.
* Default value is not configured for at least one of the service parameters.
* Added the `variables-file` parameter that allows to provide service parameters in a form of a file.
* Added a new `generate-platform-service-varfile` command. It generates a template of a variables file to use with
the `activate-platform-service` command. Alternatively, it extends an existing variables file with missing variables.
* Reverted changes made to the `terraform-upload-template` command by mistake in the `3.50.13` version.

* Merged commands related to public and private tags management into the next - `set-tag`, `delete-tag` and `describe-tag`.

* Changes to `describe-schedules` command:
* The `schedule-type` parameter is made optional.
* The `region` is no longer shown in output if it is provided as input parameter.
* Datetime changes:
* Made all CLI responses show datetime in UTC timezone.
* Simplify CLI commands:
* Removed `need-review` param from `terraform-upload-template` and `terraform-upload-template-from-git` commands;
* Removed `resource-group-name` and `availability-zone` params from `create-schedule` command;
* Removed some particular output table headers from those commands where the same params are required to input.
Mostly `region`, `cloud` and `tenantName` output attributes were removed;
* Made `import-keypair` command show in output only importing status message instead of the attributes the server returns.
* Added the ability to process the parameters of the `list` type by the `case` value

* Fixed validation for `resource-report` command

* Fixed an error associated with an inability to display the empty response
* Added the processing of empty response in the `subtotal-report` command
* Added the displaying of the `tenantGroup` value in the `describe-tenants` command
* Renamed the `inactive` alias of the `inactive` parameter in the `price` command to `N`
* Renamed the `all` alias of the `all-tenants` parameter in the `create-keypair` command to `AT`
* Renamed the `report-format` parameter in all commands to `report` also renamed alias from `rf` to `R`
* The `report-format` parameter has been converted to a flag in the following commands:
* `cost-object-report`
* `cost-usage-report`
* `resource-report`
* `subtotal-report`
* `total-report`
* `untagged-resource-report`
* the processing of it also has been added in plugins
* The `cost-usage-report` command has the following changes:
* command sends the report only by email
* command sets the `AWS` value for the `cloud` parameter automatically

* Improved resolving of a parent domain parameter. Now, a command parameter can inherit
a domain parameter under a different name and override a subset of its attributes.
* Added 2 response headers in `describe-instance` command
* `instanceStopDate`
* `instanceTerminationDate`
* Added ability to set tags for several instances, now it is possible to specify several values for `instance-id` parameter.
* Added validation of the `region` parameter to the `multitenant-report` command
* Removed the `template-type` parameter from the `publish-service` command.
Now, the type of template is determined automatically.