Merge branch 'release_note_6.12.0' into 'master'

Release notes for 6.12.0

See merge request !1203
12 jobs for v6.12.0 in 157 minutes and 1 second (queued for 122 minutes and 37 seconds)
latest
Status Job ID Name Coverage
  Packages
passed packages_deb10 #35125
build

01:53:35

passed packages_deb9 #35124
build

01:06:22

passed packages_el6 #35121
build

01:31:01

passed packages_el7 #35122
build

01:56:56

passed packages_el8 #35123
build

01:55:04

passed packages_ubuntu1804 #35126
build

01:47:37

 
  Deploy And Test
passed deploy_staging_deb10 #35131
deploy 158.39.201.179

00:07:03

passed deploy_staging_deb9 #35130
deploy 158.37.63.83

00:07:13

passed deploy_staging_el6 #35127
deploy 158.39.74.3

00:06:30

passed deploy_staging_el7 #35128
deploy 158.39.75.5

00:08:24

passed deploy_staging_el8 #35129
deploy 158.39.201.67

00:06:48

passed deploy_staging_ubuntu1804 #35132
deploy 158.39.74.3

00:08:10