community/ceph: upgrade to 15.2.7

* add missing dep py3-prettytable fixes #11941 fixes #11103

update checksum
7 jobs for !15113 with ceph in 15 minutes and 42 seconds (queued for 32 seconds)
detached
Status Job ID Name Coverage
  Lint
failed #258389
docker-alpine x86_64 allowed to fail
lint

00:00:09

 
  Build
failed #258394
docker-alpine ci-build aarch64
build-aarch64

00:00:06

failed #258395
docker-alpine ci-build armv7
build-armv7

00:00:47

failed #258393
docker-alpine ci-build ppc64le
build-ppc64le

00:00:08

failed #258392
docker-alpine ci-build s390x
build-s390x

00:00:05

failed #258391
docker-alpine ci-build x86
build-x86

00:00:11

failed #258390
docker-alpine ci-build x86_64
build-x86_64

00:14:44

 
Name Stage Failure
failed
lint Lint
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build-s390x Build
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build-armv7 Build
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build-x86_64 Build There has been a runner system failure, please try again
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build-x86 Build
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build-aarch64 Build
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build-ppc64le Build
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