requirements: Update pytest dependency pins

This adds MarkupSafe and removes termcolor and wheel.

misc/requirements/requirements-tests.txt

@@ -1,12 +1,14 @@
 beautifulsoup4==4.4.1
+CherryPy==5.4.0
 coverage==4.1
 decorator==4.0.9
-Flask==0.10.1  # rq.filter: != 0.11.0
+Flask==0.10.1
 glob2==0.4.1
 httpbin==0.4.1
 hypothesis==3.4.0
 itsdangerous==0.24
 Mako==1.0.4
+MarkupSafe==0.23
 parse==1.6.6
 parse-type==0.3.4
 py==1.4.31
@@ -15,16 +17,13 @@ pytest-bdd==2.16.1
 pytest-catchlog==1.2.2
 pytest-cov==2.2.1
 pytest-faulthandler==1.3.0
-pytest-mock==1.0.0
-pytest-qt==1.11.0
 pytest-instafail==0.3.0
-pytest-travis-fold==1.2.0
+pytest-mock==1.0
+pytest-qt==1.11.0
 pytest-repeat==0.2
 pytest-rerunfailures==2.0.0
+pytest-travis-fold==1.2.0
 pytest-xvfb==0.2.0
 six==1.10.0
-termcolor==1.1.0
 vulture==0.8.1
 Werkzeug==0.11.10
-wheel==0.29.0
-cherrypy==5.4.0