update constraint for python-glanceclient to new release 3.0.0

Change-Id: Ibb7fb3292fc47e9fadab5e7c7ff5de9dc1f89a2e
meta:version: 3.0.0
meta:diff-start: -
meta:series: ussuri
meta:release-type: release
meta:pypi: yes
meta:first: yes
meta:release:Author: Sean McGinnis <sean.mcginnis@gmail.com>
meta:release:Commit: Abhishek Kekane <akekane@redhat.com>
meta:release:Change-Id: Ia04e5b58aba1eb5e9a7d7df1e769dba084eed33c
meta:release:Code-Review+2: Sean McGinnis <sean.mcginnis@gmail.com>
meta:release:Code-Review+2: Hervé Beraud <hberaud@redhat.com>
meta:release:Workflow+1: Hervé Beraud <hberaud@redhat.com>

upper-constraints.txt

@@ -162,7 +162,7 @@ mypy-extensions===0.4.3;python_version=='3.6'
 mypy-extensions===0.4.3;python_version=='3.7'
 rsd-lib===1.2.0
 XStatic-Jasmine===2.4.1.2
-python-glanceclient===2.17.0
+python-glanceclient===3.0.0
 pyinotify===0.9.6
 debtcollector===1.22.0;python_version=='2.7'
 debtcollector===2.0.0;python_version=='3.6'