Merge pull request velero-io#1057 from skriss/v0.10-ga-changelog

update changelog for v0.10.0 GA release

Merge pull request velero-io#1043 from skriss/v0.9.11-cl

[release-0.9] v0.9.11 changelog

Merge pull request velero-io#1031 from wwitzel3/release-0.9

Add v0.9.10 changelog

Merge pull request velero-io#1008 from Bradamant3/0.10-doc-994

add content for issue 994

Merge pull request velero-io#993 from nrb/v0.9.9-cherry-picks

V0.9.9 cherry picks

Merge pull request velero-io#953 from nrb/v0.9.8-cherry-picks

V0.9.8 cherry picks

Merge pull request velero-io#919 from skriss/v0.9.8-beta.1-cherrypicks

V0.9.8 beta.1 cherrypicks

Merge pull request velero-io#908 from skriss/v0.9.7-cherrypicks

V0.9.7 cherrypicks

Merge pull request velero-io#861 from skriss/v0.9.6-cherrypicks

v0.9.6 cherrypicks

Merge pull request velero-io#850 from carlisia/release-0.9

Cherry picks for release 0.9.5