RO-4367 Update master third-party dependencies

This change is the result of running gating/update_dependencies/*
  See update_dependencies in https://rpc-openstack.atlassian.net/wiki/spaces/RE/pages/19005457/RE+for+Projects for more details.

upper-constraints.txt

@@ -4,7 +4,7 @@ typing===3.6.6
 bandit===1.5.1
 certifi===2018.11.29
 alabaster===0.7.12
-pbr===5.1.2
+pbr===5.1.3
 fixtures===3.0.0
 sphinxcontrib-websupport===1.1.0
 ipaddress===1.0.22
@@ -13,7 +13,7 @@ Pillow===5.4.1
 python-mimeparse===1.6.0
 pyOpenSSL===19.0.0
 asn1crypto===0.24.0
-MarkupSafe===1.1.0
+MarkupSafe===1.1.1
 doc8===0.8.0
 traceback2===1.4.0
 extras===1.0.0
@@ -24,22 +24,22 @@ urllib3===1.24.1
 osa-differ===0.3.10
 pycparser===2.19
 PyYAML===3.13
-cryptography===2.5
+cryptography===2.6.1
 oslosphinx===4.18.0
 unittest2===1.1.0
 Pygments===2.3.1
 requests===2.21.0
 snowballstemmer===1.2.1
 Jinja2===2.10
-pluggy===0.8.1
+pluggy===0.9.0
 toml===0.10.0
 docutils===0.14
 tox===3.7.0
 mccabe===0.4.0
 enum34===1.1.6
 flake8===2.5.5
 packaging===19.0
-py===1.7.0
+py===1.8.0
 testtools===2.3.0
 Parsley===1.3
 linecache2===1.0.0
@@ -51,18 +51,18 @@ openstackdocstheme===1.29.1
 bottle===0.12.16
 pyparsing===2.3.1
 semver===2.8.1
-stevedore===1.30.0
+stevedore===1.30.1
 pyasn1===0.4.5
 pyflakes===1.0.0
 six===1.12.0
 dulwich===0.19.11
 pep8===1.7.1
 GitPython===2.1.11
 ndg-httpsclient===0.5.1
-cffi===1.11.5
+cffi===1.12.2
 Babel===2.6.0
 smmap2===2.0.5
 filelock===3.0.10
 gitdb2===2.0.5
-virtualenv===16.3.0
+virtualenv===16.4.3
 pytz===2018.9