Add: PULL_REQUEST_TEMPLATE.md

Author: kavya498

.github/PULL_REQUEST_TEMPLATE.md

@@ -0,0 +1,26 @@
+<!--- See what makes a good Pull Request at : https://github.com/IBM-Cloud/terraform-provider-ibm/blob/master/.github/CONTRIBUTING.md --->
+
+<!--- Please keep this note for the community --->
+
+### Community Note
+
+* Please vote on this pull request by adding a 👍 [reaction](https://blog.github.com/2016-03-10-add-reactions-to-pull-requests-issues-and-comments/) to the original pull request comment to help the community and maintainers prioritize this request
+* Please do not leave "+1" or other comments that do not add relevant new information or questions, they generate extra noise for pull request followers and do not help prioritize the request
+
+<!--- Thank you for keeping this note for the community --->
+
+<!--- If your PR fully resolves and should automatically close the linked issue, use Closes. Otherwise, use Relates --->
+Relates OR Closes #0000
+
+Output from acceptance testing:
+
+<!--
+Replace TestAccXXX with a pattern that matches the tests affected by this PR.
+
+For more information on the `-run` flag, see the `go test` documentation at https://tip.golang.org/cmd/go/#hdr-Testing_flags.
+-->
+```
+$ make testacc TESTARGS='-run=TestAccXXX'
+
+...
+```