slack channel updates (#734)

Author: kim-tsao

.github/ISSUE_TEMPLATE/bug_report.md

@@ -14,8 +14,8 @@ assignees: ''
 Welcome! - We kindly ask you to:
 
   1. Fill out the issue template below 
-  2. Use Gitter if you have a question rather than a bug or feature request.
-    See the Gitter community channel at: https://gitter.im/devfile/community
+  2. Use the Devfile Community Slack Channel: https://kubernetes.slack.com/archives/C02SX9E5B55 if you have a question rather than a bug or feature request.
+    If you haven’t joined the Kubernetes workspace before, follow https://slack.k8s.io/.
 
 Thanks for understanding and for contributing to the project!
 

.github/ISSUE_TEMPLATE/config.yml

@@ -1,5 +1,5 @@
 blank_issues_enabled: false
 contact_links:
-  - name: Gitter Chat
-    url: https://gitter.im/devfile/community
-    about: gitter community channel
+  - name: Devfile Community Slack Channel
+    url: https://kubernetes.slack.com/archives/C02SX9E5B55
+    about: Devfile Community Slack Channel in the Kubernetes Workspace.  If you haven’t joined the Kubernetes workspace before, follow https://slack.k8s.io/

.github/ISSUE_TEMPLATE/feature_request.md

@@ -12,8 +12,8 @@ assignees: ''
 Welcome! - We kindly ask you to:
 
   1. Fill out the issue template below 
-  2. Use Gitter if you have a question rather than a bug or feature request.
-    See the Gitter community channel at: https://gitter.im/devfile/community
+  2. Use the Devfile Community Slack Channel: https://kubernetes.slack.com/archives/C02SX9E5B55 if you have a question rather than a bug or feature request.
+    If you haven’t joined the Kubernetes workspace before, follow https://slack.k8s.io/.
 
 Thanks for understanding and for contributing to the project!
 

CODE_OF_CONDUCT.md

@@ -59,8 +59,7 @@ representative at an online or offline event.
 ## Enforcement
 
 Instances of abusive, harassing, or otherwise unacceptable behavior may be
-reported to the community leaders responsible for enforcement at
-https://gitter.im/devfile/community.
+reported to the community leaders responsible for enforcement at our [Devfile Community Slack Channel](https://kubernetes.slack.com/archives/C02SX9E5B55 ).  
 All complaints will be reviewed and investigated promptly and fairly.
 
 All community leaders are obligated to respect the privacy and security of the