Add template for bug issue

.gitlab/issue_templates/Bug.md

+# Summary
+
+
+# Setps to reproduce
+
+
+# Observed bug behavoir
+
+
+# Expected behavior
+
+
+# Relevant logs and/or screenshots
+
+
+# Potential fixes
+
+
+
+/label ~bug ~"To Do"
+/cc @ghenry @venkat.malladi @s181706 @s189701
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