Test commit: inspect the env. vars. Travis / CircleCI use.

This is sniffing around towards googleapis#2277, to see how much info
we can use to restrict the tests we run.

.travis.yml

@@ -1,29 +1,6 @@
 language: python
 sudo: false
 
-addons:
-  apt:
-    sources:
-    - deadsnakes
-    packages:
-    - python3.5
-
-install:
-  - pip install --upgrade pip tox
-
 script:
-  - python2.7 scripts/run_unit_tests.py
-  - python3.4 scripts/run_unit_tests.py
-  - python3.5 scripts/run_unit_tests.py
-  - python scripts/run_unit_tests.py --tox-env cover
-  - tox -e lint
-  - tox -e system-tests
-  - tox -e system-tests3
-  - scripts/update_docs.sh
-
-after_success:
-  - scripts/coveralls.sh
-
-cache:
-  directories:
-    - ${HOME}/.cache/pip
+  - python scripts/print_travis.py
+  - scripts/show_git_status.sh

circle.yml

@@ -6,16 +6,8 @@ dependencies:
 
 test:
   override:
-    - python2.7 scripts/run_unit_tests.py
-    - python3.4 scripts/run_unit_tests.py
-    - python3.5 scripts/run_unit_tests.py
-    - python scripts/run_unit_tests.py --tox-env cover
-    - tox -e lint
-    # - tox -e system-tests
-    # - tox -e system-tests3
-    # - scripts/update_docs.sh
-  post:
-    - scripts/coveralls.sh
+    - python scripts/print_env.py
+    - scripts/show_git_status.sh
 
 general:
   branches:

scripts/print_env.py

@@ -0,0 +1,6 @@
+import json
+import os
+
+
+env = dict(os.environ)
+print(json.dumps(env, indent=2, sort_keys=True))

scripts/print_travis.py

@@ -0,0 +1,10 @@
+import os
+
+our_keys = sorted(key for key in os.environ.keys()
+                  if 'travis' in key.lower())
+if our_keys:
+    for key in our_keys:
+        print('%s: %s' % (key, os.getenv(key)))
+else:
+    print('No keys here, sorry')
+# Added just for a commit.

scripts/show_git_status.sh

@@ -0,0 +1,10 @@
+#!/bin/bash
+set -ev
+
+git status
+echo '===================================='
+git remote -vv
+echo '===================================='
+git branch -vv
+echo '===================================='
+git branch -a