Pip check (#1576)

* add pip check/pip install to verify recommend config actually works
* add yamllint because too much yaml now
* add FAQ's

tox.ini

@@ -2,7 +2,7 @@
 skipsdist = True
 envlist = lint,docs,py36,py37,py38,py39,py310,mypy,pytype,pyre
 deps = -r{toxinidir}/requirements.txt
-skip_missing_interpreters=True
+skip_missing_interpreters = True
 
 [gh-actions]
 python =
@@ -10,7 +10,7 @@ python =
     3.7: py37
     3.8: py38
     3.9: py39
-    3.9: lint, docs, mypy, pytype, pyre
+    3.9: lint, docs, typing
     pypy-3.7: pypy3
 
 [travis]
@@ -19,7 +19,7 @@ python =
   3.7: py37
   3.8: py38
   3.9: py39
-  3.9: lint, docs, mypy, pytype, pyre
+  3.9: lint, docs, typing
   3.10: py310
   pypy3: pypy3
 
@@ -33,15 +33,20 @@ deps =
 commands =
     trial cowrie
 
+
 [testenv:lint]
 deps =
     -r{toxinidir}/requirements.txt
     -r{toxinidir}/requirements-dev.txt
+allowlist_externals =
+    yamllint
 commands =
     flake8 --ignore E203,E501,W503 --count --statistics {toxinidir}/src
     - twistedchecker -d W9002,W9202,W9204,W9208,W9402,C0301,C0103,W9001,C9302,W9401 {toxinidir}/src
+    yamllint {toxinidir}
 basepython = python3.9
 
+
 [testenv:docs]
 setenv =
     PYTHONPATH = {toxinidir}/src
@@ -53,8 +58,9 @@ commands =
     sphinx-build -W -b html -d {envtmpdir}/doctrees . {envtmpdir}/html
 basepython = python3.9
 
-[testenv:mypy]
-description = run Mypy (static type checker)
+
+[testenv:typing]
+description = run static type checkers
 
 deps =
     -r{toxinidir}/requirements.txt
@@ -66,23 +72,5 @@ commands =
         --config-file="{toxinidir}/mypy.ini"   \
         {tty:--pretty:}                        \
         {posargs:src}
-
-[testenv:pytype]
-description = run Pytype (static type checker)
-
-deps =
-    -r{toxinidir}/requirements.txt
-    -r{toxinidir}/requirements-dev.txt
-
-commands =
     - pytype --keep-going --jobs auto
-
-[testenv:pyre]
-description = run Pyre (static type checker)
-
-deps =
-    -r{toxinidir}/requirements.txt
-    -r{toxinidir}/requirements-dev.txt
-
-commands =
     - pyre --noninteractive analyze