Fix project authorization check

Currently, project authorization check in _verify_query_segregation
only checks query field 'project_id', so normal user can pass the check
with query field 'project'. And the check also checks query operator, which
seems not right, because user will get 401 when project is his own but with
wrong operator, 400 wrong operator can be more precise.

This patch adds project field check and remove the operator check which can
be done in _validate_query.

Change-Id: I82439e4c02afd04d26ab5d419ef67bde1f4aa1ca
Closes-Bug: #1322111
use LOG instead of logger as name for the Logger object

Change-Id: I2997a33b1039dd4ab4b28b16f87d200bec9bfad7
Update doc for sample config file issue

Since we have removed the ceilometer.conf.sample file, we should
update the documentation too.

Change-Id: I93ff8bf2f3332d15495d45a5e55e6252da639302
Closes-Bug: #1320761
Change using of limit argument in get_sample

Use 'limit' as argument in scan method instead of self written approach.

Change-Id: I2576b3bf3bb210ba0f21391766e62e19c23b21a0
Fix the meter type for LB Bytes

This fixes the type on bytes in/out to cumulative.
Eventually when connections are fixed in LBaaS side,
those would be cumulative too. Also update the
measurement docs to reflect the newest changes.

Closes-Bug: 1328573

Change-Id: Iab221829702ab36a844d0ae65c6a3312a311a92b
Merge "Change using of limit argument in get_sample"
Merge "Update doc for sample config file issue"
Merge "Fix the meter type for LB Bytes"
Merge "use LOG instead of logger as name for the Logger object"
Merge "Fix project authorization check"