Add functionaility for session based get requests

To allow for the cookie from the reverse proxy to propogate through
the bioblend API requests - still need to do for all other requests
Good start through

bioblend/galaxy/__init__.py

@@ -3,6 +3,7 @@
 """
 from typing import Optional
 
+import requests
 from bioblend.galaxy import (
     config,
     container_resolution,
@@ -39,6 +40,7 @@ def __init__(
         email: Optional[str] = None,
         password: Optional[str] = None,
         verify: bool = True,
+        session: requests.sessions.Session() = None,
     ) -> None:
         """
         A base representation of a connection to a Galaxy instance, identified
@@ -106,6 +108,7 @@ def __init__(
         self.tool_data = tool_data.ToolDataClient(self)
         self.folders = folders.FoldersClient(self)
         self.tool_dependencies = tool_dependencies.ToolDependenciesClient(self)
+        self.session = session
 
     def __repr__(self) -> str:
         """

bioblend/galaxy/objects/galaxy_instance.py

@@ -11,6 +11,7 @@
 
 import bioblend
 import bioblend.galaxy
+import requests
 from bioblend.galaxy.datasets import TERMINAL_STATES
 from . import (
     client,
@@ -57,6 +58,7 @@ def __init__(
         email: Optional[str] = None,
         password: Optional[str] = None,
         verify: bool = True,
+        session: requests.sessions.Session() = None,
     ) -> None:
         self.gi = bioblend.galaxy.GalaxyInstance(url, api_key, email, password, verify)
         self.log = bioblend.log
@@ -68,6 +70,7 @@ def __init__(
         self.invocations = client.ObjInvocationClient(self)
         self.tools = client.ObjToolClient(self)
         self.jobs = client.ObjJobClient(self)
+        self.session = session
 
     def _wait_datasets(
         self, datasets: Iterable[wrappers.Dataset], polling_interval: float, break_on_error: bool = True

bioblend/galaxyclient.py

@@ -38,6 +38,7 @@ def __init__(
         password: Optional[str] = None,
         verify: bool = True,
         timeout: Optional[float] = None,
+        session: requests.sessions.Session() = None,
     ) -> None:
         """
         :param verify: Whether to verify the server's TLS certificate
@@ -133,7 +134,7 @@ def make_get_request(self, url: str, **kwargs: Any) -> requests.Response:
         headers = self.json_headers
         kwargs.setdefault("timeout", self.timeout)
         kwargs.setdefault("verify", self.verify)
-        r = requests.get(url, headers=headers, **kwargs)
+        r = self.session.get(url, headers=headers, **kwargs)
         return r
 
     def make_post_request(