Update rabbitmq

Changes:

- https://github.com/docker-library/rabbitmq/commit/853772e: Update to 3.8.0-rc.1, Erlang/OTP 22.0.7, OpenSSL 1.1.1c
- https://github.com/docker-library/rabbitmq/commit/df0ec8a: Merge pull request https://github.com/docker-library/rabbitmq/pull/366 from infosiftr/rpath
- https://github.com/docker-library/rabbitmq/commit/a5f3388: Ditch both LD_LIBRARY_PATH and /etc/ld.so.conf in favor of rpath
- https://github.com/docker-library/rabbitmq/commit/47deb27: Update generated README

library/rabbitmq

@@ -4,29 +4,29 @@ Maintainers: Tianon Gravi <[email protected]> (@tianon),
              Joseph Ferguson <[email protected]> (@yosifkit)
 GitRepo: https://github.com/docker-library/rabbitmq.git
 
-Tags: 3.8.0-beta.7, 3.8-rc
+Tags: 3.8.0-rc.1, 3.8-rc
 Architectures: amd64, arm32v7, arm64v8, i386, ppc64le, s390x
-GitCommit: 8a5c57be054b3bbe8b93cda97c05cb0fb485ca7f
+GitCommit: 853772e864a91933ae049d7d89c5a5a366f4af8f
 Directory: 3.8-rc/ubuntu
 
-Tags: 3.8.0-beta.7-management, 3.8-rc-management
+Tags: 3.8.0-rc.1-management, 3.8-rc-management
 Architectures: amd64, arm32v7, arm64v8, i386, ppc64le, s390x
 GitCommit: 3a5957b93e31661739a9018bc2ae5d20f1bfae59
 Directory: 3.8-rc/ubuntu/management
 
-Tags: 3.8.0-beta.7-alpine, 3.8-rc-alpine
+Tags: 3.8.0-rc.1-alpine, 3.8-rc-alpine
 Architectures: amd64, arm32v6, arm32v7, arm64v8, i386, ppc64le, s390x
-GitCommit: b8db35af32c1afb7e8b32e3b64d24bf0e04aac16
+GitCommit: 853772e864a91933ae049d7d89c5a5a366f4af8f
 Directory: 3.8-rc/alpine
 
-Tags: 3.8.0-beta.7-management-alpine, 3.8-rc-management-alpine
+Tags: 3.8.0-rc.1-management-alpine, 3.8-rc-management-alpine
 Architectures: amd64, arm32v6, arm32v7, arm64v8, i386, ppc64le, s390x
 GitCommit: 3a5957b93e31661739a9018bc2ae5d20f1bfae59
 Directory: 3.8-rc/alpine/management
 
 Tags: 3.7.18-beta.1, 3.7-rc
 Architectures: amd64, arm32v7, arm64v8, i386, ppc64le, s390x
-GitCommit: 8290b5b3c215c63b8eb1c003f6239c7a06f88c7f
+GitCommit: a5f3388305cd6e6387adf83b8e4718ab12502dbb
 Directory: 3.7-rc/ubuntu
 
 Tags: 3.7.18-beta.1-management, 3.7-rc-management
@@ -36,7 +36,7 @@ Directory: 3.7-rc/ubuntu/management
 
 Tags: 3.7.18-beta.1-alpine, 3.7-rc-alpine
 Architectures: amd64, arm32v6, arm32v7, arm64v8, i386, ppc64le, s390x
-GitCommit: b8db35af32c1afb7e8b32e3b64d24bf0e04aac16
+GitCommit: a5f3388305cd6e6387adf83b8e4718ab12502dbb
 Directory: 3.7-rc/alpine
 
 Tags: 3.7.18-beta.1-management-alpine, 3.7-rc-management-alpine
@@ -46,7 +46,7 @@ Directory: 3.7-rc/alpine/management
 
 Tags: 3.7.17, 3.7, 3, latest
 Architectures: amd64, arm32v7, arm64v8, i386, ppc64le, s390x
-GitCommit: a0a0135181c1b4976fe7be63a00bac5762c86792
+GitCommit: a5f3388305cd6e6387adf83b8e4718ab12502dbb
 Directory: 3.7/ubuntu
 
 Tags: 3.7.17-management, 3.7-management, 3-management, management
@@ -56,7 +56,7 @@ Directory: 3.7/ubuntu/management
 
 Tags: 3.7.17-alpine, 3.7-alpine, 3-alpine, alpine
 Architectures: amd64, arm32v6, arm32v7, arm64v8, i386, ppc64le, s390x
-GitCommit: b8db35af32c1afb7e8b32e3b64d24bf0e04aac16
+GitCommit: a5f3388305cd6e6387adf83b8e4718ab12502dbb
 Directory: 3.7/alpine
 
 Tags: 3.7.17-management-alpine, 3.7-management-alpine, 3-management-alpine, management-alpine