Lowering tox version for yaql tests

On target infra nodes there are old tox version, so we need to
lower it in library to get an ability to test yaql.
At the same time we need to make workaround of nailgun installation
due to old pip and tox versions on CI.

Change-Id: I4a2512e69d52c3d0b7cd82c656f6c49feb884d0c
Partial-Bug: #1588910

tests/yaql/install_nailgun.sh

@@ -0,0 +1,9 @@
+#!/bin/sh
+# It is a workaround for old pip and tox versions. CI uses tox 1.6 and it
+# can't manage hash symbols right way (look at
+# https://bitbucket.org/hpk42/tox/issues/181/hash-number-sign-cannot-be-escaped-in)
+# We can use deps field for tox but at the same time CI uses pip 1.5.4 and it
+# can't properly install package from a vcs subdirectory. Also we can't just
+# update pip from tox deps as dependencies doesn't managed in a consequent way in tox.
+# TODO(sbog): move this into tox configuration when CI will use newer versions of tox and pip (tested for pip 7.1.2 and tox 2.3.1)
+pip install -e "git+https://github.com/openstack/fuel-web.git#egg=nailgun&subdirectory=nailgun"

tests/yaql/run_tests.sh

@@ -1,5 +1,5 @@
 #!/bin/bash
-set -eu
+set -eux
 DIR=`dirname $0`
 cd "${DIR}" || exit 1
 

tests/yaql/tox.ini

@@ -1,10 +1,11 @@
 [tox]
-minversion = 1.7.1
+minversion = 1.6
 envlist = py27
 skipsdist = True
 
 [testenv]
-deps = PyYAML
-       docopt
-       -egit+https://github.com/openstack/fuel-web.git#egg=nailgun&subdirectory=nailgun
-commands = python check_yaqls.py
+deps = docopt
+commands =
+       pip install pip --upgrade
+       ./install_nailgun.sh
+       python check_yaqls.py