Merge pull request #261 from gold2718/fix_volcaero

Update Oslo Aero submodule with fix for prescribed volcanic aerosols

Contributors: @gold2718 
Reviewers: @mvertens
Purpose of changes: #260
Github PR URL: https://github.com/NorESMhub/CAM/pulls/261
Changes made to build system: None
Changes made to the namelist: None
Changes to the defaults for the boundary datasets: None
Substantial timing or memory changes: None
Testing:
- Tested that configuring prescribed_volcaero produces reasonable output in history files
- aux_cam_noresm tests have baseline differences due to prescribed_volcaero changes

Author: gold2718

.gitmodules

@@ -85,7 +85,7 @@
 [submodule "oslo_aero"]
     path = src/chemistry/oslo_aero
     url = https://github.com/NorESMhub/OSLO_AERO
-    fxtag = oslo_aero_3_0a008
+    fxtag = oslo_aero_3_0a009
     fxrequired = AlwaysRequired
     fxDONOTUSEurl = https://github.com/NorESMhub/OSLO_AERO.git