MQE-617: Expand MFTF PR checklist

Author: okolesnyk

.github/ISSUE_TEMPLATE.md

@@ -0,0 +1,23 @@
+<!--- Provide a general summary of the issue in the Title above -->
+
+### Preconditions
+<!--- Provide a more detailed information of environment you use -->
+<!--- PHP, Selenium & Browser version, etc.., Magento version, tag, HEAD, etc.., if relevant -->
+1. 
+2. 
+
+### Steps to reproduce
+<!--- Provide a set of unambiguous steps to reproduce this bug include code, if relevant  -->
+1. 
+2. 
+3. 
+
+### Expected result
+<!--- Tell us what should happen -->
+1. 
+
+### Actual result
+<!--- Tell us what happens instead -->
+1. [Logs, Errors]
+
+<!--- (This may be platform independent comment) -->

.github/PULL_REQUEST_TEMPLATE.md

@@ -0,0 +1,16 @@
+<!--- Provide a general summary of the Pull Request in the Title above -->
+
+### Description
+<!--- Provide a description of the changes proposed in the pull request -->
+
+### Fixed Issues (if relevant)
+<!--- Provide a list of fixed issues in the format magento/magento2-functional-testing-framework#<issue_number>, if relevant  -->
+1. magento/magento2-functional-testing-framework#<issue_number>: Issue title
+2. ...
+
+### Contribution checklist
+ - [ ] Pull request has a meaningful description of its purpose
+ - [ ] All commits are accompanied by meaningful commit messages
+ - [ ] All new or changed code is covered with unit/verification tests (if applicable)
+ - [ ] All automated tests passed successfully (all builds on Travis CI are green)
+ - [ ] Changes to Framework doesn't have backward incompatible changes for tests or have related Pull Request with fixes to tests