Use setup extra_requires for dev/prod dependencies

Also add pylint by default.

python_apps/airtime-celery/setup.py

@@ -23,5 +23,11 @@ setup(
         "kombu==4.6.10",
         "configobj",
     ],
+    extras_require={
+        "prod": [],
+        "dev": [
+            "pylint",
+        ],
+    },
     zip_safe=False,
 )

python_apps/airtime_analyzer/requirements-dev.txt

@@ -1,5 +0,0 @@
-distro
-pylint
-pytest
-pytest-cov
-pytest-xdist

python_apps/airtime_analyzer/setup.py

@@ -33,5 +33,15 @@ setup(
         # If this version is changed, it needs changing in the install script too
         "pycairo==1.19.1",
     ],
+    extras_require={
+        "prod": [],
+        "dev": [
+            "distro",
+            "pylint",
+            "pytest",
+            "pytest-cov",
+            "pytest-xdist",
+        ],
+    },
     zip_safe=False,
 )

python_apps/api_clients/requirements-dev.txt

@@ -1,4 +0,0 @@
-pylint
-pytest
-pytest-cov
-pytest-xdist

python_apps/api_clients/setup.py

@@ -23,5 +23,14 @@ setup(
         "python-dateutil>=2.7.0",
         "requests",
     ],
+    extras_require={
+        "prod": [],
+        "dev": [
+            "pylint",
+            "pytest",
+            "pytest-cov",
+            "pytest-xdist",
+        ],
+    },
     zip_safe=False,
 )

python_apps/pypo/setup.py

@@ -37,5 +37,11 @@ setup(
         "pytz",
         "requests",
     ],
+    extras_require={
+        "prod": [],
+        "dev": [
+            "pylint",
+        ],
+    },
     zip_safe=False,
 )