scope warnings to only display if the services are enabled

On my devstack environments I'm now always getting the Q_AGENT
warnings even though I don't have neutron enabled. This is mostly
confusing.

For these juno warnings lets just make sure that the whole thing
only prints out in the case where we've actually got that service
enabled.

Change-Id: I7d1bb2e65594c8bee2f572ca58a1b666e5d6caed

Author: sdague

stack.sh

@@ -1392,51 +1392,55 @@ if [[ -n "$DEPRECATED_TEXT" ]]; then
     echo_summary "WARNING: $DEPRECATED_TEXT"
 fi
 
-# TODO(dtroyer): Remove Q_AGENT_EXTRA_AGENT_OPTS after stable/juno branch is cut
-if [[ -n "$Q_AGENT_EXTRA_AGENT_OPTS" ]]; then
-    echo ""
-    echo_summary "WARNING: Q_AGENT_EXTRA_AGENT_OPTS is used"
-    echo "You are using Q_AGENT_EXTRA_AGENT_OPTS to pass configuration into $NEUTRON_CONF."
-    echo "Please convert that configuration in localrc to a $NEUTRON_CONF section in local.conf:"
-    echo "Q_AGENT_EXTRA_AGENT_OPTS will be removed early in the 'K' development cycle"
-    echo "
+if is_service_enabled neutron; then
+    # TODO(dtroyer): Remove Q_AGENT_EXTRA_AGENT_OPTS after stable/juno branch is cut
+    if [[ -n "$Q_AGENT_EXTRA_AGENT_OPTS" ]]; then
+        echo ""
+        echo_summary "WARNING: Q_AGENT_EXTRA_AGENT_OPTS is used"
+        echo "You are using Q_AGENT_EXTRA_AGENT_OPTS to pass configuration into $NEUTRON_CONF."
+        echo "Please convert that configuration in localrc to a $NEUTRON_CONF section in local.conf:"
+        echo "Q_AGENT_EXTRA_AGENT_OPTS will be removed early in the 'K' development cycle"
+        echo "
 [[post-config|/\$Q_PLUGIN_CONF_FILE]]
 [DEFAULT]
 "
-    for I in "${Q_AGENT_EXTRA_AGENT_OPTS[@]}"; do
-        # Replace the first '=' with ' ' for iniset syntax
-        echo ${I}
-    done
-fi
+        for I in "${Q_AGENT_EXTRA_AGENT_OPTS[@]}"; do
+            # Replace the first '=' with ' ' for iniset syntax
+            echo ${I}
+        done
+    fi
 
-# TODO(dtroyer): Remove Q_AGENT_EXTRA_SRV_OPTS after stable/juno branch is cut
-if [[ -n "$Q_AGENT_EXTRA_SRV_OPTS" ]]; then
-    echo ""
-    echo_summary "WARNING: Q_AGENT_EXTRA_SRV_OPTS is used"
-    echo "You are using Q_AGENT_EXTRA_SRV_OPTS to pass configuration into $NEUTRON_CONF."
-    echo "Please convert that configuration in localrc to a $NEUTRON_CONF section in local.conf:"
-    echo "Q_AGENT_EXTRA_AGENT_OPTS will be removed early in the 'K' development cycle"
-    echo "
+    # TODO(dtroyer): Remove Q_AGENT_EXTRA_SRV_OPTS after stable/juno branch is cut
+    if [[ -n "$Q_AGENT_EXTRA_SRV_OPTS" ]]; then
+        echo ""
+        echo_summary "WARNING: Q_AGENT_EXTRA_SRV_OPTS is used"
+        echo "You are using Q_AGENT_EXTRA_SRV_OPTS to pass configuration into $NEUTRON_CONF."
+        echo "Please convert that configuration in localrc to a $NEUTRON_CONF section in local.conf:"
+        echo "Q_AGENT_EXTRA_AGENT_OPTS will be removed early in the 'K' development cycle"
+        echo "
 [[post-config|/\$Q_PLUGIN_CONF_FILE]]
 [DEFAULT]
 "
-    for I in "${Q_AGENT_EXTRA_SRV_OPTS[@]}"; do
-        # Replace the first '=' with ' ' for iniset syntax
-        echo ${I}
-    done
+        for I in "${Q_AGENT_EXTRA_SRV_OPTS[@]}"; do
+            # Replace the first '=' with ' ' for iniset syntax
+            echo ${I}
+        done
+    fi
 fi
 
-# TODO(dtroyer): Remove CINDER_MULTI_LVM_BACKEND after stable/juno branch is cut
-if [[ "$CINDER_MULTI_LVM_BACKEND" = "True" ]]; then
-    echo ""
-    echo_summary "WARNING: CINDER_MULTI_LVM_BACKEND is used"
-    echo "You are using CINDER_MULTI_LVM_BACKEND to configure Cinder's multiple LVM backends"
-    echo "Please convert that configuration in local.conf to use CINDER_ENABLED_BACKENDS."
-    echo "CINDER_ENABLED_BACKENDS will be removed early in the 'K' development cycle"
-    echo "
+if is_service_enabled cinder; then
+    # TODO(dtroyer): Remove CINDER_MULTI_LVM_BACKEND after stable/juno branch is cut
+    if [[ "$CINDER_MULTI_LVM_BACKEND" = "True" ]]; then
+        echo ""
+        echo_summary "WARNING: CINDER_MULTI_LVM_BACKEND is used"
+        echo "You are using CINDER_MULTI_LVM_BACKEND to configure Cinder's multiple LVM backends"
+        echo "Please convert that configuration in local.conf to use CINDER_ENABLED_BACKENDS."
+        echo "CINDER_ENABLED_BACKENDS will be removed early in the 'K' development cycle"
+        echo "
 [[local|localrc]]
 CINDER_ENABLED_BACKENDS=lvm:lvmdriver-1,lvm:lvmdriver-2
 "
+    fi
 fi
 
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