[SEBA-823] REST APIs initial implementation (legacy+new)

Change-Id: Ia8480b72540ff08d35003534d39aff984e31120c
diff --git a/docs/requirements.txt b/docs/requirements.txt
index 3496da1..2fdbc75 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -11,4 +11,5 @@
 sphinxcontrib-actdiag~=0.8.5
 sphinxcontrib-blockdiag~=1.5.5
 sphinxcontrib-nwdiag~=0.9.5
-sphinxcontrib-seqdiag~=0.8.5
\ No newline at end of file
+sphinxcontrib-seqdiag~=0.8.5
+sphinxcontrib-openapi~=0.5.0
\ No newline at end of file