Add build_date to CLI and API docs (#15268)

* update version cmd docs

* update status cmd docs

* update version-history cmd docs

* update sys/seal-status docs

* update sys/version-history docs

website/content/api-docs/system/seal-status.mdx

@@ -37,7 +37,8 @@ The "t" parameter is the threshold, and "n" is the number of shares.
   "n": 5,
   "progress": 2,
   "nonce": "",
-  "version": "1.8.2",
+  "version": "1.11.0",
+  "build_date": "2022-05-03T08:34:11Z",
   "migration": false,
   "recovery_seal": false,
   "storage_type": "file"
@@ -55,7 +56,8 @@ Sample response when Vault is unsealed.
   "n": 5,
   "progress": 0,
   "nonce": "",
-  "version": "1.8.2",
+  "version": "1.11.0",
+  "build_date": "2022-05-03T08:34:11Z",
   "migration": false,
   "cluster_name": "vault-cluster-336172e1",
   "cluster_id": "f94053ad-d80e-4270-2006-2efd67d0910a",

website/content/api-docs/system/version-history.mdx

@@ -17,6 +17,7 @@ This endpoint returns the version history of the Vault. The response will contai
 
 - `keys`: a list of installed versions in chronological order based on the time installed
 - `key_info`: a map indexed by the versions found in the `keys` list containing the following subkeys:
+  - `build_date`: the time (in UTC) at which the Vault binary used to run the Vault server was built. **Note: Only tracked from version 1.11.0 or greater**
   - `previous_version`: the version installed prior to this version or `null` if no prior version exists
   - `timestamp_installed`: the time (in UTC) at which the version was installed
 
@@ -36,19 +37,27 @@ $ curl \
 
 ```json
 {
-  "keys": ["1.9.0", "1.9.1", "1.9.2"],
+  "keys": ["1.9.0", "1.9.1", "1.9.2", "1.11.0"],
   "key_info": {
     "1.9.0": {
+      "build_date": null,
       "previous_version": null,
       "timestamp_installed": "2021-11-18T10:23:16Z"
     },
     "1.9.1": {
+      "build_date": null,
       "previous_version": "1.9.0",
       "timestamp_installed": "2021-12-13T11:09:52Z"
     },
     "1.9.2": {
+      "build_date": null,
       "previous_version": "1.9.1",
       "timestamp_installed": "2021-12-23T10:56:37Z"
+    },
+    "1.11.0": {
+      "build_date": "2022-05-03T08:34:11Z",
+      "previous_version": null,
+      "timestamp_installed": "2022-05-03T13:16:04Z"
     }
   }
 }

website/content/docs/commands/status.mdx

@@ -25,12 +25,14 @@ Check the status:
 
 ```shell-session
 $ vault status
+
 Sealed: false
 Key Shares: 5
 Key Threshold: 3
 Unseal Progress: 0
 Unseal Nonce:
 Version: x.y.z
+Build Date: 2022-05-03T08:34:11Z
 Cluster Name: vault-cluster-49ffd45f
 Cluster ID: d2dad792-fb99-1c8d-452e-528d073ba205
 

website/content/docs/commands/version-history.mdx

@@ -11,13 +11,14 @@ The `version-history` command prints the historical list of installed Vault vers
 
 ```shell-session
 Note: Version tracking was added in 1.9.0. Earlier versions have not been tracked.
+      The Build Date will only be available for versions 1.11.0 or greater.
 
-Version   Installation Time
--------   -----------------
+Version  Installation Time     Build Date
+-------  -----------------     ----------
 1.9.0    2021-11-18T10:23:16Z
 1.9.1    2022-12-13T11:09:52Z
 1.9.2    2021-12-23T10:56:37Z
-```
+1.11.0   2022-05-03T13:16:04Z  2022-05-03T08:34:11Z
 
 ## Usage
 

website/content/docs/commands/version.mdx

@@ -17,5 +17,5 @@ It can also be printed by adding the flags `--version` or `-v` to the `vault` co
 
 ```shell-session
 $ vault -v
-Vault v1.2.3
+Vault v1.2.3, built 2022-05-03T08:34:11Z
 ```