run tests in different envs
fixed travis.yml format
run tests from script
run tests from script
run tests from script
fixed tests script
run flake8 and integration tests separately
fixed integration tests
fixed integration tests
added pyyaml dependency to tests
fixed integration tests deps
run tests in different envs
CFY-977 bump version to 3.1
CFY-977 bump version to 3.1
Merge branch 'develop' into tests-improvement
Merge pull request #102 from cloudify-cosmo/tests-improvement

Split tests to different travis envs
updated travis envs order
Merge branch 'develop'

Conflicts:
	plugins/agent-installer/setup.py
	plugins/plugin-installer/setup.py
	rest-service/manager_rest/VERSION
merge master with develop