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Refs #3460

Token value set in api action/request is always retrieved from the
current cookie contents. When cookie contents change is detected ui
redirects user to log in.

Cookie changes are detected each time the app tries to use the user
uuid/token information. A window interval (hardcoded to 10 seconds) was added
to access this information to ensure that cookie change logic will be
applied even when ui app gets idle (no api calls are made).

- Include suspend/release suspension tests
- Mock astakos displayname/uuid resolving methods
- Update fixtures with user uuids
- Test vmid lookup

Refs #3454

Refs #3453

VM lookup is triggered when search query matches the following patterns

- vm<id>
- vm-<id>

 * Document the Quotas feature
 * Minor fixes and updates
 * pep8 fixes

Pithos usage tests require special setup
since test accounts should be created and configured properly
in astakos and quotaholder components.

Also, these tests should know the server's version accounting policy.
For the time being, pithos server does not return this information.
So the tests check the PITHOS_BACKEND_FREE_VERSIONING setting
to discover the server's policy.
However, this works only if the tests run against a server
running in the same host, but not also for a remote server.

For the above reasons, the specific tests are deactivated
until there will be available a proper pithos testing framework.

globally and per-user.

Refs: #3309

Substitute pithos-reset-usage with
pithos-usage management command
and extend it to list also account usage.

Refs: #3442
Refs: #1733

Pithos has two different version accounting
policies:
* free: do not include object history version size 
to the total account usage
* debit: include object history version size to 
the total account usage
This configurable by
PITHOS_BACKEND_FREE_VERSIONING setting.

Pithos delete container function purges 
the history versions of the including objects.
and should send to the quota holder component
the released disk space *only*  
in the case of debit version accounting policy.

Also the purging function used to return 
the negative of the computed released disk space 
but to the quotaholder component was sent 
its negative.
So, erroneously, the released disk space was
added to the total quota usage.

Provide tests for the following distinct cases:
* free version accounting policy (PITHOS_BACKEND_FREE_VERSIONING=True) 
and `auto` container versioning policy
* free version accounting policy
(PITHOS_BACKEND_FREE_VERSIONING=True) 
and `none` container versioning policy
* debit version accounting policy
(PITHOS_BACKEND_FREE_VERSIONING=False) 
and `auto` container versioning policy
* debit version accounting policy(PITHOS_BACKEND_FREE_VERSIONING=False) 
and `none` container versioning policy

X-Object-Modified-By header was accidentally 
eliminated in the response

in order to have usable pdb repl

    
Loggers for all synnefo components should be configured in
snf-webproject setting file '10-snf-webproject-logging.conf'.

Do not include in the InternalServerError response
the actual error.

Fix inadvertent use of shared objects in synnefo/lib/astakos.py and
pithos/api/delegate.py, since current use is racy when running multiple
requests under gunicorn. Create a private, per-request copy instead.

- Display remaining resources
- Predefined flavors display fix

respect current user quota in flavor options display

also updated ui views to use the new class

include all available information as retrieved from astakos response

- widen up view
- prettier (no scroll) compact flavor list style, when flavor options
  are too many to display in a single row

Add --dry-run option to flavor-create management command. Also, do not
crash if flavor already exists.

Refs #3366

Apply human readable (MB, GB) conversion

Allow per-service configuration of the (http) quotaholder client.
Kamaki is no longer needed in service (or ganeti) nodes,
because the client has been moved to snf-common.

Also fix the default quotaholder settings for pithos backend to be disabled
by default, and don't initialize quotaholder client when not needed.
This fixes crashes of non-user-facing pithos backend uses such as
pithcat from snf-image.

Refs #3421

Update the following sections in the guide:

 * Ganeti: Don't build package; use GRNET's until 2.7 is out
 * gevent: Make it a prerequisite on both nodes

Cyclades public networks do not have an owner, and since can not use
the commissioning system. Also, make snf-dispatcher instead of failing
for networks without userid to just a log a warning. This does not apply for
API, because all API requests should have a userid.

Print a message about astakos-quota calculating all user quotas,
which on a big system takes some time.

Add logging statements on some important auth providers operations.

Complete auth providers logging support will be merged from the
feature-astakos-authpolicies branch which also includes additional auth
providers improvements.

Removed with_logging wrapper which inconsistently extracted user/request
arguments. Logging statements placed explicitly within login/logout
methods.

Fix admin notification logging

hide prompt for additional login methods if no such methods exist

Additional check to avoid verified inactive users reactivation

Fix an infinite loop bug in UserCache.fetch_names(), and correct the
*-list commands to only call fetch_names(), when invoked with the
--displayname option.