Merge pull request #483 from dod-ccpo/add_exceptions_to_coveragerc

Update .coveragerc to handle exceptions (including the replacement for reverted PR 479)

.coveragerc

@@ -1,3 +1,16 @@
 [run]
 omit = atst/routes/dev.py
 branch = True
+
+[report]
+
+# Regexes for lines to exclude from consideration
+exclude_lines =
+
+    # Have to re-enable the standard pragmas
+    pragma: no cover
+    pragma: no branch
+
+    # Don't complain about missing debug-only code:
+    def __repr__
+