Trivial typo

Change-Id: If77c9afd493a2a91a853a3826d7465f21d81d343
Insertion in HBase should be fixed

* All data inserted to HBase should be String or Unicode
* Data stored in HBase is flatten

Fixes bug 1240474

Change-Id: Ic36f5460275de3c829a7b27932bde284d71bd806
Add new rate-based disk and network pipelines

Addresses: BP rates-derived-from-cumulative

Add new pipeline config to derive rate-based gauge meters
from the current set of cumulative disk and network meters
gathered by the compute agent.

The latter form of meter is not suitable for alarming
against a static threshold, whereas rate-based meters would
allow for example autoscaling actions to be driven off the
observed per-second rates of I/O.

Change-Id: I5764797d4eebb129b66a1524d47c38282c6ef095
assertTrue(isinstance) replace by assertIsInstance

some of tests use different method of assertTrue(isinstance(A, B))
or assertEqual(type(A), B). The correct way is to use
assertIsInstance(A, B) provided by testtools

Change-Id: I7072fef7fe5f76e526fc0ccca7a4894accaae80f
Closes-Bug: #1268480
Added resources support in pollster's interface

1. Change the pollster's interface to support resources:
- Added optional parameter 'resources' to the method get_samples. It
  specifies a list of the endpoints from which the pollster would get
  data.

2. Change the PollingTask to record the resources for each pollster.

3. Pass the resources recorded in PollingTask to the pollsters in
central agent.

This patch only changes the interface of pollsters and PollingTask in
central agent. The existing central agent's pollsters still ignore the
resources passed in by the PollingTask.

Implements: blueprint support-resources-pipeline-item
Change-Id: Ic7a83c63ea291d0527004113bc8d8bb09311d14f
use six.move.xrange replace xrange

in python3.x, there is no method named xrange(),
it has replaced by range(),which is equal to xrange()
in python2.x. so we must fix this issue.
we use six moduleto fix this issue.

Closes-Bug: #1268439
Change-Id: I7aa8fe80155710cd639721d4b3d5bd9b4219e27d
Merge "Insertion in HBase should be fixed"
Merge "assertTrue(isinstance) replace by assertIsInstance"
Merge "Add new rate-based disk and network pipelines"
Merge "Trivial typo"
Merge "use six.move.xrange replace xrange"
Merge "Added resources support in pollster's interface"