Expose a variety of mixins with customAllValue in their configuration

[schmikei]

This PR

1. fixes a Gitlab/Tensorflow render issues around imports inside other libraries.

2. It also models: Add customAllValue support to docker, snmp, and windows observ libs #1595 to update a bunch of the mixins to expose the customAllValue so that the logslib can use the exposed parameter

Gitlab error while importing

RUNTIME ERROR: couldn't open import "../g.libsonnet": no match locally or in the Jsonnet library paths
        integrations/gitlab/vendor/gitlab-mixin/dashboards.libsonnet:1:11-34   thunk <g> from <$>
        integrations/gitlab/vendor/gitlab-mixin/dashboards.libsonnet:71:5-6
        integrations/gitlab/vendor/gitlab-mixin/dashboards.libsonnet:53:17-195
        integrations/gitlab/vendor/gitlab-mixin/dashboards.libsonnet:53:17-195  +:
        integrations/gitlab/vendor/gitlab-mixin/dashboards.libsonnet:(40:9)-(67:26)     object <anonymous>
        integrations/gitlab/vendor/gitlab-mixin/mixin.libsonnet:24:49-80   thunk from <thunk <dashboard> from <object <anonymous>>>
        integrations/gitlab/vendor/grafana-cloud-integration-utils/util.libsonnet:120:5-14  function <anonymous>
        integrations/gitlab/vendor/gitlab-mixin/mixin.libsonnet:24:25-108   thunk <dashboard> from <object <anonymous>>
        integrations/gitlab/vendor/gitlab-mixin/mixin.libsonnet:25:7-16 object <anonymous>
        Field "gitlab-logs.json"
        During manifestation

Getting this while trying to render the dashboards for Gitlab within another repo.

Changing this import to this correctly resolves it

[schmikei]

@Dasomeone the vsphere mixin stuff should be resolved in #1587 when we want to take a look at that otherwise I can make the identical updates in this PR as well.

[Dasomeone]

@Dasomeone the vsphere mixin stuff should be resolved in #1587 when we want to take a look at that otherwise I can make the identical updates in this PR as well.

If you're fixing it in the other PR, then just move all the vsphere changes over to that one so linting will pass on this one :)

Also apologies for missing that other PR, will have a look at that one tomorrow!