Update Gravity to 0.13.4 and document setting env vars on dynamic

handlers.

doc/source/admin/scaling.md

@@ -400,6 +400,21 @@ If you omit the `processes` argument this will default to a single process.
 You can further customize the handler names using the `name_template` section,
 for a complete example see [this gravity test case](https://github.com/galaxyproject/gravity/blob/a00df1c671fdc01e3fbc42f64a851a45a37a1870/tests/test_process_manager.py#L28).
 
+You can define arbitrary environment variables for dynamic handlers using the ``environnment`` key on a handler
+definition:
+
+```yaml
+gravity:
+  handlers:
+    handler:
+      processes: 3
+      pools:
+        - job-handlers
+      environment:
+        FOO: bar
+        BAZ: quux
+```
+
 If you are not using dynamic handlers please omit the `handlers` entry completely, as these will
 otherwise be idle and not handle jobs or workflows.
 

lib/galaxy/dependencies/dev-requirements.txt

@@ -69,7 +69,7 @@ fs==2.4.16
 funcsigs==1.0.2
 future==0.18.2; (python_version >= "2.6" and python_full_version < "3.0.0") or (python_full_version >= "3.3.0")
 galaxy-sequence-utils==1.1.5
-gravity==0.13.3; python_version >= "3.6"
+gravity==0.13.4; python_version >= "3.6"
 greenlet==1.1.2; python_version >= "3" and python_full_version < "3.0.0" and (platform_machine == "aarch64" or platform_machine == "ppc64le" or platform_machine == "x86_64" or platform_machine == "amd64" or platform_machine == "AMD64" or platform_machine == "win32" or platform_machine == "WIN32") and (python_version >= "2.7" and python_full_version < "3.0.0" or python_full_version >= "3.6.0") and (python_version >= "3.7" and python_full_version < "3.0.0" or python_full_version >= "3.6.0" and python_version >= "3.7") and (python_version >= "3.6" and python_full_version < "3.0.0" and python_version < "4.0" or python_version >= "3.6" and python_version < "4.0" and python_full_version >= "3.6.0") or python_version >= "3" and (platform_machine == "aarch64" or platform_machine == "ppc64le" or platform_machine == "x86_64" or platform_machine == "amd64" or platform_machine == "AMD64" or platform_machine == "win32" or platform_machine == "WIN32") and (python_version >= "2.7" and python_full_version < "3.0.0" or python_full_version >= "3.6.0") and (python_version >= "3.7" and python_full_version < "3.0.0" or python_full_version >= "3.6.0" and python_version >= "3.7") and (python_version >= "3.6" and python_full_version < "3.0.0" and python_version < "4.0" or python_version >= "3.6" and python_version < "4.0" and python_full_version >= "3.6.0") and python_full_version >= "3.5.0"
 gunicorn==20.1.0; python_version >= "3.5"
 gxformat2==0.15.0

lib/galaxy/dependencies/pinned-requirements.txt

@@ -57,7 +57,7 @@ fs==2.4.16
 funcsigs==1.0.2
 future==0.18.2; (python_version >= "2.6" and python_full_version < "3.0.0") or (python_full_version >= "3.3.0")
 galaxy-sequence-utils==1.1.5
-gravity==0.13.3; python_version >= "3.6"
+gravity==0.13.4; python_version >= "3.6"
 greenlet==1.1.2; python_version >= "3" and python_full_version < "3.0.0" and (platform_machine == "aarch64" or platform_machine == "ppc64le" or platform_machine == "x86_64" or platform_machine == "amd64" or platform_machine == "AMD64" or platform_machine == "win32" or platform_machine == "WIN32") and (python_version >= "2.7" and python_full_version < "3.0.0" or python_full_version >= "3.6.0") and (python_version >= "3.7" and python_full_version < "3.0.0" or python_full_version >= "3.6.0" and python_version >= "3.7") and (python_version >= "3.6" and python_full_version < "3.0.0" and python_version < "4.0" or python_version >= "3.6" and python_version < "4.0" and python_full_version >= "3.6.0") or python_version >= "3" and (platform_machine == "aarch64" or platform_machine == "ppc64le" or platform_machine == "x86_64" or platform_machine == "amd64" or platform_machine == "AMD64" or platform_machine == "win32" or platform_machine == "WIN32") and (python_version >= "2.7" and python_full_version < "3.0.0" or python_full_version >= "3.6.0") and (python_version >= "3.7" and python_full_version < "3.0.0" or python_full_version >= "3.6.0" and python_version >= "3.7") and (python_version >= "3.6" and python_full_version < "3.0.0" and python_version < "4.0" or python_version >= "3.6" and python_version < "4.0" and python_full_version >= "3.6.0") and python_full_version >= "3.5.0"
 gunicorn==20.1.0; python_version >= "3.5"
 gxformat2==0.15.0