Report compute-api bugs against nova

For compute-api set the launchpad project users report bugs
against to "nova". Users can report bugs using the "bug icon" that will
directly link to the launchpad project, it currently goes to
"openstack-manuals" which is wrong for this content.

This variable is used by openstackdocstheme 1.2.6.

Closes-Bug: #1524476
Change-Id: I08ba11bb1c5388bc4611cea581274ac5d724c8d9

api-guide/source/conf.py

@@ -78,6 +78,7 @@ release = '2.1.0'
 #   giturl: The location of conf.py on Git. Must be set manually.
 #   gitsha: The SHA checksum of the bug description. Extracted from git log.
 #   bug_tag: Tag for categorizing the bug. Must be set manually.
+#   bug_project: Launchpad project to file bugs against.
 # These variables are passed to the logabug code via html_context.
 giturl = u'http://git.openstack.org/cgit/openstack/nova/tree/api-guide/source'
 git_cmd = "/usr/bin/git log | head -n1 | cut -f2 -d' '"
@@ -88,7 +89,8 @@ pwd = os.popen("pwd").read().strip('\n')
 html_context = {"pwd": pwd,
                 "gitsha": gitsha,
                 "bug_tag": bug_tag,
-                "giturl": giturl}
+                "giturl": giturl,
+                "bug_project": "nova"}
 
 # List of patterns, relative to source directory, that match files and
 # directories to ignore when looking for source files.