Update rabbitmq

Changes:

- https://github.com/docker-library/rabbitmq/commit/a3018ad: Update to 3.7.18, Erlang/OTP 22.1, OpenSSL 1.1.1d
- https://github.com/docker-library/rabbitmq/commit/1a66e87: Update to 3.8.0-rc.1, Erlang/OTP 22.1, OpenSSL 1.1.1d
- https://github.com/docker-library/rabbitmq/commit/eb9d525: Update to 3.7.18, Erlang/OTP 22.0.7, OpenSSL 1.1.1d
- https://github.com/docker-library/rabbitmq/commit/11b0f43: Update to 3.7.18-rc.1, Erlang/OTP 22.0.7, OpenSSL 1.1.1d

library/rabbitmq

@@ -6,7 +6,7 @@ GitRepo: https://github.com/docker-library/rabbitmq.git
 
 Tags: 3.8.0-rc.1, 3.8-rc
 Architectures: amd64, arm32v7, arm64v8, i386, ppc64le, s390x
-GitCommit: a7554888b0d8b2977f1f483d3be8235c28e35d9f
+GitCommit: 1a66e87e730aca0a82c1547511546799944bca0b
 Directory: 3.8-rc/ubuntu
 
 Tags: 3.8.0-rc.1-management, 3.8-rc-management
@@ -16,7 +16,7 @@ Directory: 3.8-rc/ubuntu/management
 
 Tags: 3.8.0-rc.1-alpine, 3.8-rc-alpine
 Architectures: amd64, arm32v6, arm32v7, arm64v8, i386, ppc64le, s390x
-GitCommit: a7554888b0d8b2977f1f483d3be8235c28e35d9f
+GitCommit: 1a66e87e730aca0a82c1547511546799944bca0b
 Directory: 3.8-rc/alpine
 
 Tags: 3.8.0-rc.1-management-alpine, 3.8-rc-management-alpine
@@ -24,42 +24,22 @@ 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
+Tags: 3.7.18, 3.7, 3, latest
 Architectures: amd64, arm32v7, arm64v8, i386, ppc64le, s390x
-GitCommit: f5ce17a6eb0b4076ee47426a303817679f695ab3
-Directory: 3.7-rc/ubuntu
-
-Tags: 3.7.18-beta.1-management, 3.7-rc-management
-Architectures: amd64, arm32v7, arm64v8, i386, ppc64le, s390x
-GitCommit: f22c0b266cfeb8cb6d776f9e6a961908c2557ad3
-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: f5ce17a6eb0b4076ee47426a303817679f695ab3
-Directory: 3.7-rc/alpine
-
-Tags: 3.7.18-beta.1-management-alpine, 3.7-rc-management-alpine
-Architectures: amd64, arm32v6, arm32v7, arm64v8, i386, ppc64le, s390x
-GitCommit: da06cbdbe9e89305b2650a782af06f96004a894e
-Directory: 3.7-rc/alpine/management
-
-Tags: 3.7.17, 3.7, 3, latest
-Architectures: amd64, arm32v7, arm64v8, i386, ppc64le, s390x
-GitCommit: 5d021ba01f152c68ec0ce7563431f44a3425e307
+GitCommit: a3018ad3062fa2703f671e8526dd36b1e67cf783
 Directory: 3.7/ubuntu
 
-Tags: 3.7.17-management, 3.7-management, 3-management, management
+Tags: 3.7.18-management, 3.7-management, 3-management, management
 Architectures: amd64, arm32v7, arm64v8, i386, ppc64le, s390x
 GitCommit: f22c0b266cfeb8cb6d776f9e6a961908c2557ad3
 Directory: 3.7/ubuntu/management
 
-Tags: 3.7.17-alpine, 3.7-alpine, 3-alpine, alpine
+Tags: 3.7.18-alpine, 3.7-alpine, 3-alpine, alpine
 Architectures: amd64, arm32v6, arm32v7, arm64v8, i386, ppc64le, s390x
-GitCommit: 5d021ba01f152c68ec0ce7563431f44a3425e307
+GitCommit: a3018ad3062fa2703f671e8526dd36b1e67cf783
 Directory: 3.7/alpine
 
-Tags: 3.7.17-management-alpine, 3.7-management-alpine, 3-management-alpine, management-alpine
+Tags: 3.7.18-management-alpine, 3.7-management-alpine, 3-management-alpine, management-alpine
 Architectures: amd64, arm32v6, arm32v7, arm64v8, i386, ppc64le, s390x
 GitCommit: 4b2b11c59ee65c2a09616b163d4572559a86bb7b
 Directory: 3.7/alpine/management