Add sourcesecret and kustomization manifestgen

This includes a change to the `sync` generator to make the deploy
secret name configurable.

Signed-off-by: Hidde Beydals <hello@hidde.co>

docs/cmd/flux_create_secret_helm.md

@@ -14,8 +14,8 @@ flux create secret helm [name] [flags]
 ### Examples
 
 ```
-    # Create a Helm authentication secret on disk and encrypt it with Mozilla SOPS
 
+  # Create a Helm authentication secret on disk and encrypt it with Mozilla SOPS
   flux create secret helm repo-auth \
     --namespace=my-namespace \
     --username=my-username \

docs/cmd/flux_create_source_git.md

@@ -62,7 +62,7 @@ flux create source git [name] [flags]
   -p, --password string                        basic authentication password
       --secret-ref string                      the name of an existing secret containing SSH or basic credentials
       --ssh-ecdsa-curve ecdsaCurve             SSH ECDSA public key curve (p256, p384, p521) (default p384)
-      --ssh-key-algorithm publicKeyAlgorithm   SSH public key algorithm (rsa, ecdsa, ed25519) (default rsa)
+      --ssh-key-algorithm publicKeyAlgorithm   SSH public key algorithm (rsa, ecdsa, ed25519)
       --ssh-rsa-bits rsaKeyBits                SSH RSA public key bit size (multiplies of 8) (default 2048)
       --tag string                             git tag
       --tag-semver string                      git tag semver range