enable pylint via pants

pants.toml

@@ -15,6 +15,7 @@ backend_packages = [
   "pants.backend.python.lint.bandit",
   "pants.backend.python.lint.black",
   "pants.backend.python.lint.flake8",
+  "pants.backend.python.lint.pylint",
 
   # shell
   "pants.backend.shell",
@@ -96,7 +97,7 @@ interpreter_constraints = [
 
 [python.resolves]
 st2 = "lockfiles/st2.lock"
-pylint_plugins = "lockfiles/pylint_plugins.lock"
+pylint_plugins = "lockfiles/pylint_plugins.lock" # lockfiles/pylint.lock should have same contents
 
 [python.resolves_to_constraints_file]
 # Our direct requirements are in requirements-pants.txt;
@@ -146,10 +147,22 @@ extra_requirements = [
 config = "lint-configs/python/.flake8"
 
 [pylint]
+lockfile = "lockfiles/pylint.lock"
 version = "pylint~=2.8.2"
 extra_requirements = [
   "setuptools", # includes pkg_resources
 ]
+config = "lint-configs/python/.pylintrc"
+source_plugins = [
+  # the /pylint_plugins directory
+  "pylint_plugins",
+]
+args = [
+  # needed in st2* components, runners, packs
+  "--load-plugins=pylint_plugins.api_models",
+  # needed in st2* components, runners
+  "--load-plugins=pylint_plugins.db_models",
+]
 
 [regex-lint]
 config = "@lint-configs/regex-lint.yaml"