Updated issue templates from .github.

Signed-off-by: dblock <[email protected]>

.github/ISSUE_TEMPLATE/bug_report.md

@@ -0,0 +1,31 @@
+---
+name: 🐛 Bug report
+about: Create a report to help us improve
+title: '[BUG]'
+labels: 'bug, untriaged'
+assignees: ''
+---
+
+**What is the bug?**
+A clear and concise description of the bug.
+
+**How can one reproduce the bug?**
+Steps to reproduce the behavior:
+1. Go to '...'
+2. Click on '....'
+3. Scroll down to '....'
+4. See error
+
+**What is the expected behavior?**
+A clear and concise description of what you expected to happen.
+
+**What is your host/environment?**
+ - OS: [e.g. iOS]
+ - Version [e.g. 22]
+ - Plugins
+
+**Do you have any screenshots?**
+If applicable, add screenshots to help explain your problem.
+
+**Do you have any additional context?**
+Add any other context about the problem.

.github/ISSUE_TEMPLATE/config.yml

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+contact_links:
+  - name: OpenSearch Community Support
+    url: https://discuss.opendistrocommunity.dev/
+    about: Please ask and answer questions here.
+  - name: AWS/Amazon Security
+    url: https://aws.amazon.com/security/vulnerability-reporting/
+    about: Please report security vulnerabilities here.

.github/ISSUE_TEMPLATE/feature_request.md

@@ -1,19 +1,18 @@
 ---
 name: 🎆 Feature request
-about: Suggest an idea for this project
-title: ''
-labels: enhancement
+about: Request a feature in this project
+title: '[FEATURE]'
+labels: 'enhancement, untriaged'
 assignees: ''
 ---
+**Is your feature request related to a problem?**
+A clear and concise description of what the problem is, e.g. _I'm always frustrated when [...]_
 
-**Is your feature request related to a problem? Please describe.**
-A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]
-
-**Describe the solution you'd like**
+**What solution would you like?**
 A clear and concise description of what you want to happen.
 
-**Describe alternatives you've considered**
+**What alternatives have you considered?**
 A clear and concise description of any alternative solutions or features you've considered.
 
-**Additional context**
+**Do you have any additional context?**
 Add any other context or screenshots about the feature request here.

.github/ISSUE_TEMPLATE/pull_request.md

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+### Description
+[Describe what this change achieves]
+
+### Issues Resolved
+[List any issues this PR will resolve]
+
+### Check List
+- [ ] Commits are signed per the DCO using --signoff 
+
+By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.
+For more information on following Developer Certificate of Origin and signing off your commits, please check [here](https://github.com/opensearch-project/OpenSearch/blob/main/CONTRIBUTING.md#developer-certificate-of-origin).