Bump min for oslo.service & .privsep to fix SIGHUP

The combined fixes for the two related bugs resolve the problem where
SIGHUP breaks the nova-compute service. Bump the minimum requirements
for oslo.privsep and oslo.service to make sure these fixes are in place,
and add a reno to advertise resolution of the issue.

This also bumps oslo.utils to match the lower constraint from
oslo.service.

Change-Id: I39ead744b21a4423352a88573f327273e4d09630
Related-Bug: #1794708
Related-Bug: #1715374

lower-constraints.txt

@@ -83,13 +83,13 @@ oslo.log==3.36.0
 oslo.messaging==7.0.0
 oslo.middleware==3.31.0
 oslo.policy==1.35.0
-oslo.privsep==1.32.0
+oslo.privsep==1.33.2
 oslo.reports==1.18.0
 oslo.rootwrap==5.8.0
 oslo.serialization==2.21.1
-oslo.service==1.34.0
+oslo.service==1.40.1
 oslo.upgradecheck==0.1.1
-oslo.utils==3.37.0
+oslo.utils==3.40.2
 oslo.versionedobjects==1.35.0
 oslo.vmware==2.17.0
 oslotest==3.8.0

releasenotes/notes/SIGHUP-works-c810d5ed14c73f68.yaml

@@ -0,0 +1,8 @@
+---
+fixes:
+  - |
+    By incorporating oslo fixes for `bug 1715374`_ and `bug 1794708`_, the
+    nova-compute service now handles ``SIGHUP`` properly.
+
+    .. _`bug 1794708`: https://bugs.launchpad.net/oslo.service/+bug/1794708
+    .. _`bug 1715374`: https://bugs.launchpad.net/nova/+bug/1715374

requirements.txt

@@ -42,14 +42,14 @@ oslo.log>=3.36.0 # Apache-2.0
 oslo.reports>=1.18.0 # Apache-2.0
 oslo.serialization!=2.19.1,>=2.21.1 # Apache-2.0
 oslo.upgradecheck>=0.1.1
-oslo.utils>=3.37.0 # Apache-2.0
+oslo.utils>=3.40.2 # Apache-2.0
 oslo.db>=4.44.0 # Apache-2.0
 oslo.rootwrap>=5.8.0 # Apache-2.0
 oslo.messaging>=7.0.0 # Apache-2.0
 oslo.policy>=1.35.0 # Apache-2.0
-oslo.privsep>=1.32.0 # Apache-2.0
+oslo.privsep>=1.33.2 # Apache-2.0
 oslo.i18n>=3.15.3 # Apache-2.0
-oslo.service>=1.34.0 # Apache-2.0
+oslo.service>=1.40.1 # Apache-2.0
 rfc3986>=1.1.0 # Apache-2.0
 oslo.middleware>=3.31.0 # Apache-2.0
 psutil>=3.2.2 # BSD