RND-363 Add --legacy parameter for snapshot create (#1474)

* Add --legacy parameter for snapshot create
  It results in creating a legacy snapshot, i.e. based on a database dump
  By default this parameter's value is set to `False` for Cloudify >= 7.1
  and `True` for version 7.0.

* Also enable `--no-legacy` for creating a 'new' snapshot

Author: mateumann

cloudify_cli/cli/cfy.py

@@ -1431,6 +1431,13 @@ def __init__(self):
             help=helptexts.TEMPDIR_PATH
         )
 
+        self.legacy = click.option(
+            '--legacy/--no-legacy',
+            is_flag=True,
+            default=False,
+            help=helptexts.LEGACY_SNAPSHOT
+        )
+
         self.wait_for_status = click.option(
             '-w',
             '--wait-for-status',

cloudify_cli/cli/helptexts.py

@@ -600,6 +600,7 @@
              'drift and run update operations as necessary'
 TEMPDIR_PATH = "Temporary location to be used for snapshot creation. If not " \
                "specified, /tmp will be used."
+LEGACY_SNAPSHOT = "Create legacy version of the snapshot (as opposed to 'new')"
 WAIT_FOR_STATUS = "Whether to wait for snapshot status [default: False]."
 SUMMARY_HELP = """
     Retrieve summary of {type}, e.g. a count of each {example}.

cloudify_cli/commands/snapshots.py

@@ -37,7 +37,6 @@
 def snapshots():
     """Handle manager snapshots
     """
-    pass
 
 
 @snapshots.command(name='restore',
@@ -97,6 +96,7 @@ def restore(snapshot_id,
 @cfy.options.common_options
 @cfy.options.queue_snapshot
 @cfy.options.tempdir_path
+@cfy.options.legacy
 @cfy.options.wait_for_status
 @cfy.pass_client()
 @cfy.pass_logger
@@ -106,6 +106,7 @@ def create(snapshot_id,
            exclude_events,
            queue,
            tempdir_path,
+           legacy,
            wait_for_status,
            logger,
            client):
@@ -124,7 +125,8 @@ def create(snapshot_id,
                                         not exclude_logs,
                                         not exclude_events,
                                         queue,
-                                        tempdir_path=tempdir_path)
+                                        tempdir_path=tempdir_path,
+                                        legacy=legacy)
     started_log_msg = "Started workflow execution. The execution's id is" \
                       " {0}.".format(execution.id)
     queued_log_msg = '`queue` flag was passed, snapshot creation will start' \