doc: cut v1.5.0 release

[andyzhangx]

What type of PR is this?
/kind documentation

What this PR does / why we need it:
doc: cut v1.5.0 release

Which issue(s) this PR fixes:

Fixes #

Requirements:

• uses conventional commit messages
• includes documentation
• adds unit tests
• tested upgrade from previous version

Special notes for your reviewer:

git checkout -b cut-v1.5.0
vi README.md
cd charts/
sed -i 's/v1.4.0/v1.5.0/g' README.md
cp latest/ v1.5.0 -r
cd v1.5.0/
grep latest ./* -R
sed -i 's/latest/v1.5.0/g' ./blob-csi-driver/*.yaml
helm package blob-csi-driver
git add blob-csi-driver-v1.5.0.tgz
cd ../../
helm repo index charts --url=https://raw.githubusercontent.com/kubernetes-sigs/blob-csi-driver/master/charts
cd ./deploy/
mkdir v1.5.0
cp *.yaml v1.5.0/
cd v1.5.0/
grep ":latest" ./* -R
sed -i 's/:latest/:v1.5.0/g' *.yaml
cd ..
grep latest ./* -R
sed -i 's/:latest/:v1.5.0/g' *.yaml
cd ../docs/
cp install-csi-driver-master.md install-csi-driver-v1.5.0.md
grep master install-csi-driver-v1.5.0.md
sed -i 's/master/v1.5.0/g' install-csi-driver-v1.5.0.md
cd ..
vi docs/install-blob-csi-driver.md
git add charts/ deploy/ docs
$git_commit
# second commit to revert back to latest version
cd deploy
sed -i 's/:v1.5.0/:latest/g' *.yaml
$git_commit
git push origin cut-v1.5.0

Release note:

doc: cut v1.5.0 release

[k8s-ci-robot]

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This pull-request has been approved by: andyzhangx

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