SUSE CaaS Platform 4.2.3 (2020-10-07)

7eb97ad Fix anchors for updating and troubleshooting
4191eaf Bump version to 4.2.3
b88e71c Fix broken heading for software mgmt chapter
920ea62 Bump version to 4.2.3
5414ea9 Add kubelet.conf warning message for k8s version < 1.17 (bsc#1176578) (#998)
d747baa Add instruction on how to fix invalid client secret (bsc#1173055) (#1000)
2d6ed97 Update README with branch info
2b822b8 Add note about updating nodes cloned from template (Closes #831)
bd50329 Add navigation headings for backup object storage providers (Closes #992)
2dc7e5e Fix typo in backup object storage section
0f2f2f7 Remove obsolete section from admin guide
f52c4aa Change title for kublet config section to align with rest of the chapter
84d2968 Add information about Kubelet config mod (bsc#1174219) (#982)
d2c2b00 Add clarifying wording about CPI to cluster init section (Closes #980)
db4ce26 Fix links to SUSE registry for 4.2
189d95d Add missing brace in alertmanager config example (Closes #890)
29a81cc Fix wrong command parameter in update instructions (Closes #967)
024b03a Fix wording for velero backup introduction (Closes #965)
b5a3034 Reflect cordon & drain operations on update (#959)
88d8476 Fix docs version in docinfo