Merge pull request #4214 from hashicorp/vault

bumping vault to 0.10-rc1

library/vault

@@ -7,7 +7,7 @@ Architectures: amd64, arm64v8, arm32v6, i386
 GitCommit: 75178223957b123d016181e628b0fe6443ab3d49
 Directory: 0.X
 
-Tags: 0.10.0-beta1
+Tags: 0.10.0-rc1
 Architectures: amd64, arm64v8, arm32v6, i386
-GitCommit: f900989efe67f431fea8fa0aabaa97ef527e805c
+GitCommit: 55816211448c4d880b7dc17c300830cba8c88935
 Directory: 0.X