added two new metrics for vcenter receiver

Signed-off-by: Samiur Arif <[email protected]>

.chloggen/add-two-new-vecenter-receiver-metrics.yaml

@@ -0,0 +1,21 @@
+# Use this changelog template to create an entry for release notes.
+# One of 'breaking', 'deprecation', 'new_component', 'enhancement', 'bug_fix'
+change_type: enhancement
+# The name of the component, or a single word describing the area of concern, (e.g. filelogreceiver)
+component: vcenterreceiver
+# A brief description of the change.  Surround your text with quotes ("") if it needs to start with a backtick (`).
+note: "Adds vCenter memory capacity for hosts and memory granted metric for VMs." 
+# Mandatory: One or more tracking issues related to the change. You can use the PR number here if no issue exists.
+issues: [33607]
+# (Optional) One or more lines of additional information to render under the primary note.
+# These lines will be padded with 2 spaces and then inserted directly into the document.
+# Use pipe (|) for multiline entries.
+subtext:
+# If your change doesn't affect end users or the exported elements of any package,
+# you should instead start your pull request title with [chore] or use the "Skip Changelog" label.
+# Optional: The change log or logs in which this entry should be included.
+# e.g. '[user]' or '[user, api]'
+# Include 'user' if the change is relevant to end users.
+# Include 'api' if there is a change to a library API.
+# Default: '[user]'
+change_logs: [user]

receiver/vcenterreceiver/documentation.md

@@ -802,6 +802,32 @@ The vSAN throughput of a virtual machine.
 | ---- | ----------- | ------ |
 | direction | The type of vSAN throughput. | Str: ``read``, ``write`` |
 
+## Optional Metrics
+
+The following metrics are not emitted by default. Each of them can be enabled by applying the following configuration:
+
+```yaml
+metrics:
+  <metric_name>:
+    enabled: true
+```
+
+### vcenter.host.memory.capacity
+
+Total memory  capacity of the host system.
+
+| Unit | Metric Type | Value Type | Aggregation Temporality | Monotonic |
+| ---- | ----------- | ---------- | ----------------------- | --------- |
+| MiBy | Sum | Double | Cumulative | false |
+
+### vcenter.vm.memory.granted
+
+The amount of memory that is granted to a VM.
+
+| Unit | Metric Type | Value Type | Aggregation Temporality | Monotonic |
+| ---- | ----------- | ---------- | ----------------------- | --------- |
+| MiBy | Sum | Int | Cumulative | false |
+
 ## Resource Attributes
 
 | Name | Description | Values | Enabled |