Add three new verification modes for `.spec.verify.mode`:
* `HEAD`: Verify the commit that the HEAD of the repo points to after
checking out to the ref specified in `.spec.ref`. Its the same as
`head`, which cannot be removed due to backwards compatibility
reasons and is converted to `HEAD` internally.
* `Tag`: Verify the tag referred to by `.spec.ref.tag`.
* `TagAndHEAD`: Verify the tag referred to by `.spec.ref.tag` and the
commit that the tag points to.
The default is `HEAD`, to ensure backwards compatibility.
Furthermore, add `.status.sourceVerificationMode` to record the last
successful verification mode used.
Signed-off-by: Sanskar Jaiswal <jaiswalsanskar078@gmail.com>
Add `.spec.proxySecretRef.name` to the `GitRepository` API to allow
referencing a secret containing the proxy settings to be used for all
remote Git operations for the particular `GitRepository` object.
It takes precedence over any proxy configured through enviornment
variables.
Signed-off-by: Sanskar Jaiswal <jaiswalsanskar078@gmail.com>