Previously using `state.template` or `state.template_str` would not be checked/rendered into proper formatting resulting in some templates not being correctly executed. For example, the following template worked:
```
/tmp/issue-2068-template-str:
virtualenv:
- managed
- no_site_packages: True
- distribute: True
pep8-pip:
pip:
- installed
- name: pep8
- bin_env: /tmp/issue-2068-template-str
- mirrors: http://testpypi.python.org/pypi
- require:
- virtualenv: /tmp/issue-2068-template-str
```
as opposed to the following which did not work:
```
/tmp/issue-2068-template-str:
virtualenv.managed:
- no_site_packages: True
- distribute: True
pep8-pip:
pip.installed:
- name: pep8
- bin_env: /tmp/issue-2068-template-str
- mirrors: http://testpypi.python.org/pypi
- require:
- virtualenv: /tmp/issue-2068-template-str
```
The dotted names should be converted into lists for example, which was the problems with the two examples above.
* `salt.modules.file.contains()`, `salt.modules.file.contains_regex()`, `salt.modules.file.contains_glob()` and `salt.utils.find` now do the searching/matching against chunks of data; using defaults, 32KB chunks of data in files; instead of searching/matching line by line.
* Based on the above changes `salt.states.file.append()`, when checking if the text to append is already present, now uses `salt.modules.file.contains_regex()` in order to match spanning multiple lines ignoring the addition/deletion of white-space or new lines, except inside commas.
* The regex used on the above item is built at runtime using `salt.utils.build_whitepace_splited_regex()`, just feed the text to it and you'll get back the proper regex to the matching/searching on, for example `salt.modules.file.contains_regex()`.
* Added tests for all this code.
Defined "integration.run_tests()" function which can be used to execute
a particular integration test case. Existing bolerplate code in modules
and states tests is replaced with following lines:
if __name__ == '__main__':
from integration import run_tests
run_tests(TestCaseName)
Typical usecase could look like this:
python integration/modules/pip.py --no-clean -vv
