Update issue templates (#299)

.github/ISSUE_TEMPLATE/bug_report.yml

@@ -6,14 +6,14 @@ body:
  attributes:
  value: >
  Thanks for taking the time to fill out this bug report! Before submitting your issue, please make
- sure you are using the latest version of the charm. If not, please switch to this image prior to 
+ sure you are using the latest version of the charm. If not, please try upgrading to the latest edge release prior to 
  posting your report to make sure it's not already solved.
  - type: textarea
  id: bug-description
  attributes:
  label: Bug Description
  description: >
- If applicable, add screenshots to help explain your problem. If applicable, add screenshots to 
+ If applicable, add screenshots to 
  help explain the problem you are facing. 
  validations:
  required: true
@@ -22,7 +22,8 @@ body:
  attributes:
  label: To Reproduce
  description: >
- Please provide a step-by-step instruction of how to reproduce the behavior.
+ Please provide the output of `juju export-bundle` and step-by-step instructions for how to reproduce the behavior.
+ A deployment diagram could be handy too. See https://discourse.charmhub.io/t/9269 for examples.
  placeholder: |
  1. `juju deploy ...`
  2. `juju relate ...`
@@ -55,4 +56,3 @@ body:
  id: additional-context
  attributes:
  label: Additional context
-

.github/pull_request_template.md

@@ -14,5 +14,5 @@
 <!-- What steps need to be taken to test this PR? -->
 
 
-## Release Notes
-<!-- A digestable summary of the change in this PR -->
+## Upgrade Notes
+<!-- To upgrade from an older revision of charmed prometheus, ... -->