Mount host /proc and /sys for eBPF kernel symbol access

pyroscope.ebpf needs /proc/kallsyms and tracefs access for eBPF
profiling. Mount host /proc and /sys into the container.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

argocd/manifests/alloy-profiling-ringtail/daemonset.yaml

@@ -46,6 +46,12 @@ spec:
               mountPath: /var/lib/alloy/data
             - name: tmp
               mountPath: /tmp
+            - name: host-proc
+              mountPath: /host/proc
+              readOnly: true
+            - name: host-sys
+              mountPath: /host/sys
+              readOnly: true
           securityContext:
             privileged: true
       tolerations:
@@ -58,3 +64,9 @@ spec:
           emptyDir: {}
         - name: tmp
           emptyDir: {}
+        - name: host-proc
+          hostPath:
+            path: /proc
+        - name: host-sys
+          hostPath:
+            path: /sys