[collector] document FIPS-140 image

.chloggen/fips.yaml

@@ -0,0 +1,12 @@
+# 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. agent, clusterReceiver, gateway, operator, chart, other)
+component: collector
+# A brief description of the change. Surround your text with quotes ("") if it needs to start with a backtick (`).
+note: Document the possible use of a FIPS-140 compliant image
+# One or more tracking issues related to the change
+issues: [1582]
+# (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:

helm-charts/splunk-otel-collector/values.yaml

@@ -958,6 +958,8 @@ image:
   otelcol:
     # The registry and name of the opentelemetry collector image to pull
     repository: quay.io/signalfx/splunk-otel-collector
+    # For the FIPS-140 enabled version, use this repository instead:
+    # repository: quay.io/signalfx/splunk-otel-collector-fips
     # The tag of the Splunk OTel Collector image, default value is the chart appVersion
     tag: ""
     # The policy that specifies when the user wants the opentelemetry collector images to be pulled