Refresh all pull image secrets every hour

[spowelljr]

Fixes #105

Running a ticker that runs every hour that deletes the image pull secret in all namespaces and recreates them

[medyagh]

lets generate tokens for 12 hours in first place so dont have to refresh it that often

[spowelljr]

I tried but when I try to change the expiry it still gives the same value

package main

import (
        "context"
        "fmt"
        "log"
        "time"

        "golang.org/x/oauth2"
        "golang.org/x/oauth2/google"
)

func main() {
        creds, err := google.FindDefaultCredentials(context.Background())
        if err != nil {
                log.Fatal(err)
        }
        token, err := creds.TokenSource.Token()
        if err != nil {
                log.Fatal(err)
        }
        fmt.Println(token.Expiry)
        dur, err := time.ParseDuration("30s")
        if err != nil {
                log.Fatal(err)
        }
        ts := oauth2.ReuseTokenSourceWithExpiry(token, creds.TokenSource, dur)
        token, err = ts.Token()
        if err != nil {
                log.Fatal(err)
        }
        fmt.Println(token.Expiry)
}