feat: add/expose cli flags (#771)

* feat: add/expose cli flags

Signed-off-by: Hans Song <hans.m.song@gmail.com>

* fix tests

Signed-off-by: Hans Song <hans.m.song@gmail.com>

* remove skipdeps from subcommand options

Signed-off-by: Hans Song <hans.m.song@gmail.com>

* remove skip-deps from subcommand flags

Signed-off-by: Hans Song <hans.m.song@gmail.com>

* remove SkipDeps from subcommand implementations

Signed-off-by: Hans Song <hans.m.song@gmail.com>

* update doco with new flags

Signed-off-by: Hans Song <hans.m.song@gmail.com>

---------

Signed-off-by: Hans Song <hans.m.song@gmail.com>

docs/index.md

@@ -537,6 +537,7 @@ Flags:
   -c, --chart string                    Set chart. Uses the chart set in release by default, and is available in template as {{ .Chart }}
       --color                           Output with color
       --debug                           Enable verbose output for Helm and set log-level to debug, this disables --quiet/-q effect
+      --disable-force-update            do not force helm repos to update when executing "helm repo add"
       --enable-live-output              Show live output from the Helm binary Stdout/Stderr into Helmfile own Stdout/Stderr.
                                         It only applies for the Helm CLI commands, Stdout/Stderr for Hooks are still displayed only when it's execution finishes.
   -e, --environment string              specify the environment name. defaults to "default"
@@ -553,6 +554,7 @@ Flags:
                                         A release must match all labels in a group in order to be used. Multiple groups can be specified at once.
                                         "--selector tier=frontend,tier!=proxy --selector tier=backend" will match all frontend, non-proxy releases AND all backend releases.
                                         The name of a release can be used as a label: "--selector name=myrelease"
+      --skip-deps                       skip running "helm repo update" and "helm dependency build"
       --state-values-file stringArray   specify state values in a YAML file. Used to override .Values within the helmfile template (not values template).
       --state-values-set stringArray    set state values on the command line (can specify multiple or separate values with commas: key1=val1,key2=val2). Used to override .Values within the helmfile template (not values template).
   -v, --version                         version for helmfile