Use lower case true/false in the sample config file

Using lower case true/false in the etc/tempest.conf.sample for
consistency.

Change-Id: Ic85d29ad0f865203be23c286bdf317bea84851a9
add negative test cases for create snapshots:

- test_create_snapshot_with_nonexistent_volume_id
- test_create_snapshot_without_passing_volume_id

Change-Id: I3e105b51a96566e714adc655394f1ff9b2748cb5
Adds initial ceilometerclient testing code

This patch add the initial ceilometerclient testing code:

* meter-list
* resource-list
* alarm-list

Change-Id: I8b3f8b93be7a4ddab8011318b12f3d0910e69d87
Implements: bp add-basic-ceilometer-tests
Set max_template_size to heat's default value

Align default with heat, as this is what most people will be testing.
Patch to make devstack not override the default value:
I77549f2b5e953ff712c50a2b372f6b04725d5eb0

Change-Id: I77c5b59ae9c78489ebd08fd54c865118d3ec00ed
Merge "Set max_template_size to heat's default value"
Merge "Use lower case true/false in the sample config file"
Merge "add negative test cases for create snapshots:"
Merge "Adds initial ceilometerclient testing code"