Move .coveragerc contents to pyproject.toml (#1281)

Consolidate tool settings into pyproject.toml.

One of the PRs that will resolve
#1268.

Author: mhucka

check/pytest-and-incremental-coverage

@@ -70,8 +70,7 @@ fi
 check/pytest . \
     --actually-quiet \
     --cov \
-    --cov-report=annotate \
-    --cov-config=dev_tools/conf/.coveragerc
+    --cov-report=annotate
 pytest_result=$?
 
 # Analyze coverage files.

dev_tools/conf/.coveragerc

@@ -23,6 +23,14 @@ skip-magic-trailing-comma = true
 core = "sysmon"
 disable_warnings = ["no-sysmon"]
 
+# Omit files outside the current working directory.
+# Note: this means coverage must be run from the openfermion repo root.
+# Failure to do so will result in false positives.
+omit = [
+    "./profiling/performance_benchmarks.py",
+    "./dev_tools/*",
+]
+
 [tool.mypy]
 implicit_optional = true