fix: mount persistence PVC into migration

[lukas-reining]

fixes: flipt-io/flipt#3616

Hey, when using --set migrations.enabled=true, and using --set persistence.enabled=true with SQLite, migrations fail because the persistent volume is not mounted into the pod of the migration job.
For testing and eval systems, using the SQLite is good enough and so it would be good to also be able to run the migrations automatically on them.
I created a copy of the migration job pod with the PVC mounted and it worked well!

[GeorgeMac]

Thanks @lukas-reining !

Another way to approach this is (for future reference), when using SQLite for evaluation purposes, is to drop the migration job and instead add the following to the values.yaml:

flipt:
  args:
  - "--force-migrate"

Flipt has its migrations embedded and can run them before initializing the server.
Glad this approach works too though!

p.s. could you bump the patch version for me on the chart 🙏

[lukas-reining]

Another way to approach this is (for future reference), when using SQLite for evaluation purposes, is to drop the migration job and instead add the following to the values.yaml:

Ah I did not see that one, good point!

Glad this approach works too though!

I think it is also good that the offered way to do migrations works for any storage option :)

p.s. could you bump the patch version for me on the chart 🙏

Done! Just now saw that the lint failed before.

[lukas-reining]

can you approve the check @GeorgeMac? :)