move beaker to an optional requirement under examples (#823)

Author: biyeun

Makefile

@@ -35,7 +35,7 @@ livehtml:
 .PHONY: livehtml
 
 install:
-	@pipenv install --dev -e .[develop,testing,docs,quality,ldap_authn]
+	@pipenv install --dev -e .[develop,testing,docs,quality,ldap_authn,examples]
 .PHONY: install
 
 test:

setup.py

@@ -81,13 +81,13 @@ def run_tests(self):
         'quality': ['pylama', 'isort', 'eradicate', 'mypy', 'black', 'bandit', 'readme_renderer[md]'],
         'types': ['types-requests'],
         'ldap_authn': ['python-ldap'],
+        'examples': ['beaker'],
     },
     install_requires=[
         "requests",
         "pycryptodomex",
         "pyjwkest>=1.3.6",
         "mako",
-        "beaker",
         "cryptography",
         "defusedxml",
         "typing_extensions",