Address changes from picodata@c2ae3ade

Changes:

* remove `instance.memtx.checkpoint_count`
* remove `instance.memtx.checkpoint_interval`
* remove `instance.iproto.max_concurrent_messages`

Address changes from picodata@4233b7ba (24.7.0-1047)

fix: rename cluster_id

See merge request picodata/picodata/picodata-chart!4

feat: add plugins support

See merge request picodata/picodata/picodata-chart!3

feat: resolve issue2

See merge request picodata/picodata/picodata-chart!2

up Readme.md

up version

fix secret

add PICODATA_FAILURE_DOMAIN

add  startupProbe

add livenessProbe/readinessProbe