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Closes #2

Refs: #2

Refs: #2

In kamaki, AstakosClient is imported from the astakosclient
package, and then it is wrapped so that some convenienve methods
can be added.

Refs: #2

The "service_type" of an API client is related to the endpoint URL
used to initialize the client and should match the "type" attribute
of the corresponding endpoint.

Fixes #5

Replace "dateutils" with "python-dateutil"

Update astakos-related commands to support project id assignments and reassignments (introduced in synnefo 0.16). Also, update commands and library methods that are affected by these changes.

Change expected value from 202 to 200 in reassign_floating_ip

In create: change from FlagArgument to BooleanArgument
In modify: add a --public FlagArgument
In arguments: test BooleanArgument and fix minor bugs

BooleanArgument is different to FlagArgment because it accepts
both boolean values (True|False)

Side effect: class _quota is not needed, therefore merged to
quota_list as well

Problem: a new-line was missing, causing the first line of "details"
to break.

Notable changes:
 in CLI, --project --> --project-id
 in clients, create_floating_ip overwrites OS/network method

1. Rename "kamaki project application ACTION" --> "kamaki project ACTION"
2. Application commands now require a project ID
3. astakosclient.Astakosclient.application_action signature has changed
   accordingly
4. All ex-application actions will use only one non-positional argument,
   namely "project_id", and application ID with the required positional
   --app-id=APPLICTION_ID

tenant_id is a UUID that represents a project, not a user.

- Add optional argument --project in command "file create"
- Add command "file reassign"

Add optional argument --project in create subcommands;
add subcommand "reassign" for "server", "network" and "ip" commands.

"quote" is method imported from urllib in kamaki.clients

Refs: #5160

Refs: #5150

Refs: #5150