Upgrade Keptn

Upgrade from Keptn 0.9.x to 0.10.0

Expand to see upgrade instructions:

Before starting the update, we strongly advise to create a backup of your Keptn projects. To do so, please follow the instructions in the backup guide.
To download and install the Keptn CLI for version 0.10.0, you can choose between:
- Automatic installation of the Keptn CLI (Linux and Mac):
  - The next command will download the 0.10.0 release from GitHub, unpack it, and move it to /usr/local/bin/keptn.
```
curl -sL https://get.keptn.sh | KEPTN_VERSION=0.10.0 bash
```
  - Verify that the installation has worked and that the version is correct by running:
```
keptn version
```
- Manual installation of the Keptn CLI:
  - Download the release for your platform from the GitHub
  - Unpack the binary and move it to a directory of your choice (e.g., /usr/local/bin/)
  - Verify that the installation has worked and that the version is correct by running:
```
keptn version
```
To upgrade your Keptn installation from 0.9.x to 0.10.0, the Keptn CLI offers the command:
```
keptn upgrade
```
- Please verify that you are connected to the correct Kubernetes cluster before executing this command.
- This CLI command executes a Helm upgrade using the Helm chart from: keptn-installer/keptn-0.10.0.tgz

Note: If you have manually modified your Keptn deployment, e.g., you deleted the Kubernetes Secret bridge-credentials for disabling basic auth, the keptn upgrade command will not detect the modification. Please re-apply your modification after performing the upgrade.