add httpx client session

Author: sanderegg

services/director/requirements/_base.in

@@ -15,6 +15,7 @@
 aiocache
 aiodocker
 fastapi[all]
-httpx
+httpx[http2]
 prometheus-client
 pydantic
+tenacity

services/director/requirements/_base.txt

@@ -114,6 +114,10 @@ h11==0.14.0
     # via
     #   httpcore
     #   uvicorn
+h2==4.1.0
+    # via httpx
+hpack==4.0.0
+    # via h2
 httpcore==1.0.6
     # via httpx
 httptools==0.6.4
@@ -135,6 +139,8 @@ httpx==0.27.2
     #   -r requirements/../../../packages/service-library/requirements/_fastapi.in
     #   -r requirements/_base.in
     #   fastapi
+hyperframe==6.0.1
+    # via h2
 idna==3.10
     # via
     #   anyio
@@ -422,7 +428,9 @@ starlette==0.41.3
     #   -c requirements/../../../requirements/constraints.txt
     #   fastapi
 tenacity==9.0.0
-    # via -r requirements/../../../packages/service-library/requirements/_base.in
+    # via
+    #   -r requirements/../../../packages/service-library/requirements/_base.in
+    #   -r requirements/_base.in
 toolz==1.0.0
     # via -r requirements/../../../packages/service-library/requirements/_base.in
 tqdm==4.67.0