fix SSL/TLS warnings in build

The specs build talks to Launchpad to ensure that there is a blueprint
for each spec being added to the repository. Those calls emit warnings
unless SSL is configured properly, which requires newer SSL libraries
than are available in the standard library.

Change-Id: I86f8af6ec1f890ebdd260226b0323df8040405a4
Signed-off-by: Doug Hellmann <doug@doughellmann.com>

doc/source/conf.py

@@ -15,6 +15,17 @@
 import datetime
 import os
 import sys
+import warnings
+
+# Try to only emit warnings about SSL issues one time.
+try:
+    from requests.packages.urllib3 import exceptions
+    warnings.filterwarnings('ignore', '.*',
+                            exceptions.InsecurePlatformWarning)
+    warnings.filterwarnings('ignore', '.*',
+                            exceptions.SNIMissingWarning)
+except ImportError:
+    pass
 
 sys.path.insert(0, os.path.abspath('../..'))
 # -- General configuration ----------------------------------------------------

requirements.txt

@@ -3,3 +3,5 @@ oslosphinx
 sphinx>=1.1.2,!=1.2.0,<1.3
 yasfb>=0.5.0
 simplejson>=2.2.0
+pyOpenSSL>=0.14  # Apache-2.0
+pyasn1  # BSD