Add oslo.context

Treat the new oslo.context library just like the other Oslo
libraries. i.e. make it possible to either test with upstream
released library, or with git versions of oslo.context.

Change-Id: I2dc498324d6c405655a8e2e249465c5b351ca960
diff --git a/lib/oslo b/lib/oslo
index a20aa14..d00580b 100644
--- a/lib/oslo
+++ b/lib/oslo
@@ -23,6 +23,7 @@
 GITDIR["cliff"]=$DEST/cliff
 GITDIR["oslo.config"]=$DEST/oslo.config
 GITDIR["oslo.concurrency"]=$DEST/oslo.concurrency
+GITDIR["oslo.context"]=$DEST/oslo.context
 GITDIR["oslo.db"]=$DEST/oslo.db
 GITDIR["oslo.i18n"]=$DEST/oslo.i18n
 GITDIR["oslo.log"]=$DEST/oslo.log
diff --git a/stackrc b/stackrc
index 18e1de3..bd9548f 100644
--- a/stackrc
+++ b/stackrc
@@ -279,6 +279,10 @@
 GITREPO["oslo.config"]=${OSLOCFG_REPO:-${GIT_BASE}/openstack/oslo.config.git}
 GITBRANCH["oslo.config"]=${OSLOCFG_BRANCH:-master}
 
+# oslo.context
+GITREPO["oslo.context"]=${OSLOCTX_REPO:-${GIT_BASE}/openstack/oslo.context.git}
+GITBRANCH["oslo.context"]=${OSLOCTX_BRANCH:-master}
+
 # oslo.db
 GITREPO["oslo.db"]=${OSLODB_REPO:-${GIT_BASE}/openstack/oslo.db.git}
 GITBRANCH["oslo.db"]=${OSLODB_BRANCH:-master}