auth: update oauthclient to fix login/logout

* upgrade oauthclient to fix the 500 error when login with lightweight
account and fix logout process.
* fix pytest/pluggy issue. (closes #1773)

requirements.pinned.txt

@@ -101,7 +101,7 @@ invenio-mail==1.0.2
 invenio-migrator==1.0.0a10
 invenio-oaiserver==1.0.2
 invenio-oauth2server==1.0.3
-invenio-oauthclient==1.1.0
+invenio-oauthclient==1.1.1
 invenio-opendefinition==1.0.0a8
 invenio-pages==1.0.0a4
 invenio-pidstore==1.0.0
@@ -153,7 +153,6 @@ pathlib2==2.3.3           # via ipython, pickleshare
 pexpect==4.6.0            # via ipython
 pickleshare==0.7.5        # via ipython
 pillow==5.4.1             # via flask-iiif, invenio-formatter
-pluggy==0.8.1
 poyo==0.4.2               # via cookiecutter
 prompt-toolkit==1.0.15    # via ipython
 psycopg2-binary==2.7.6.1  # via invenio-db

setup.py

@@ -49,6 +49,7 @@
     'pytest-pep8>=1.0.6',
     'pytest-runner>=2.7.0',
     'pytest>=4.0.0',
+    'pluggy>=0.7.0',
     'selenium>=2.53.6',
     'simplejson>=3.10',
     'six>=1.10.0',
@@ -115,7 +116,7 @@
     'invenio-migrator>=1.0.0a10',
     'invenio-oaiserver>=1.0.0',
     'invenio-oauth2server>=1.0.3',
-    'invenio-oauthclient>=1.0.0',
+    'invenio-oauthclient>=1.1.1',
     'invenio-opendefinition>=1.0.0a7',
     'invenio-pages>=1.0.0a4',
     'invenio-pidstore>=1.0.0',
@@ -138,7 +139,6 @@
     'raven>=6.6.0',
     'requests>=2.11.1',
     'Wand>=0.4.2',
-    'pluggy>=0.8.0',
     'redis<3.0.0,>=2.10.0',
     'celery<4.0,>=3.1',                 # FIXME: invenio-indexer
     'elasticsearch<3.0.0,>=2.0.0',      # FIXME: invenio-search