Add coverage

tools/telemetry/third_party/coverage/tox-new.ini

Index: tools/telemetry/third_party/coverage/tox-new.ini
diff --git a/tools/telemetry/third_party/coverage/tox-new.ini b/tools/telemetry/third_party/coverage/tox-new.ini
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+# Licensed under the Apache License: http://www.apache.org/licenses/LICENSE-2.0
+# For details: https://bitbucket.org/ned/coveragepy/src/default/NOTICE.txt
+
+# An experiment in using tox to install the sdist, and do the pytracer/ctracer
+# split.  Doesn't yet work because the working tree is in the import path, so
+# "import coverage" finds the working tree instead of the sdist-installed code.
+# This can be fixed one of two ways:
+#
+# 1. By changing to a "src" layout, so that "import coverage" won't work in the
+# working tree, or 
+#
+# 2. By removing the "__init__.py" from the tests directory, so that nose won't
+# add the working tree to the path. This will also mean changing a number of
+# import statements in the tests directory.
+
+[tox]
+envlist = py{26,27,33,34,35}-{c,py}tracer, pypy{24,26,3_24}-pytracer
+skip_missing_interpreters = True
+
+[testenv]
+commands =
+    # Create tests/zipmods.zip, install the egg1 egg
+    python igor.py zip_mods install_egg 
+
+    # Remove the C extension so that we can test the PyTracer
+    pytracer: python igor.py remove_extension
+    pytracer: python igor.py test_with_tracer py {posargs}
+
+    ctracer: python igor.py test_with_tracer c {posargs}
+
+deps =
+    # https://requires.io/github/nedbat/coveragepy/requirements/
+    nose==1.3.7
+    mock==1.3.0
+    PyContracts==1.7.6
+    py26: unittest2==1.1.0
+    py{26,27}: gevent==1.0.2
+    py{26,27}: eventlet==0.17.4
+    py{26,27,33,34,35}: greenlet==0.4.9
+
+passenv = COVERAGE_*
+
+[testenv:pypy]
+basepython = pypy
+
+[testenv:pypy24]
+basepython = pypy2.4
+
+[testenv:pypy26]
+basepython = pypy2.6
+
+[testenv:pypy3_24]
+basepython = pypy3-2.4
+
+
+# Yes, pep8 will read its settings from tox.ini!
+[pep8]
+# E265: block comment should start with '# '
+# E301 expected 1 blank line, found 0
+# E401 multiple imports on one line
+# The rest are the default ignored warnings.
+ignore = E265,E123,E133,E226,E241,E242,E301,E401
+max-line-length = 100