feat: add customImage

[lenglet-k]

Resolve this issue: #24

[eshepelyuk]

Hello

1. I suggest to add a new boolean parameter to registry.image object that will instruct template to auto detect and add image suffix or not.

2. I do prefer this PR to be split into 2 : for image suffix and image pull secrets. the latter one is will be merged definitely faster.

[lenglet-k]

ok i will do that

[lenglet-k]

imagePullSecrets PR: #26

for the 1 point the customImage is not good for you ? You prefer that:

registry:
  image:
#   one below value can be true
    sql: false # if true  set sql image
    kafka: false # if true  set kafkasql image
    mem: true # if true  set mem image, is default value like now
    custom: false #  if true set custom image define in image registry.image
# or maybe that
    customImage:
      sql: false # if true  set sql image
      kafka: false # if true  set kafkasql image
      mem: true # if true  set mem image, is default value like now
      custom: false #  if true set custom image define in image registry.image

[eshepelyuk]

imagePullSecrets PR: #26

for the 1 point the customImage is not good for you ? You prefer that:

registry:
  image:
#   one below value can be true
    sql: false # if true  set sql image
    kafka: false # if true  set kafkasql image
    mem: true # if true  set mem image, is default value like now
    custom: false #  if true set custom image define in image registry.image
# or maybe that
    customImage:
      sql: false # if true  set sql image
      kafka: false # if true  set kafkasql image
      mem: true # if true  set mem image, is default value like now
      custom: false #  if true set custom image define in image registry.image

registry:
  image:
    .....
    persistenceSuffix: true # by default true - current behaviour, if false then no suffix added and repository + tag is used, so you can redefine custom image via repository plus tag