Skip Nova exercises if Nova is not enabled

This allows for ./exercises.sh to complete sucessfully when nova is not
enabled / installed.

Change-Id: If969e14f5106c15007146e8fad1da27d131828c8

exercises/aggregates.sh

@@ -43,6 +43,10 @@ source $TOP_DIR/exerciserc
 # Test as the admin user
 . $TOP_DIR/openrc admin admin
 
+# If nova api is not enabled we exit with exitcode 55 so that
+# the exercise is skipped
+is_service_enabled n-api || exit 55
+
 # Cells does not support aggregates.
 is_service_enabled n-cell && exit 55
 

exercises/bundle.sh

@@ -39,6 +39,10 @@ rm -f $TOP_DIR/cacert.pem
 rm -f $TOP_DIR/cert.pem
 rm -f $TOP_DIR/pk.pem
 
+# If nova api is not enabled we exit with exitcode 55 so that
+# the exercise is skipped
+is_service_enabled n-api || exit 55
+
 # Get Certificates
 nova x509-get-root-cert $TOP_DIR/cacert.pem
 nova x509-create-cert $TOP_DIR/pk.pem $TOP_DIR/cert.pem

exercises/euca.sh

@@ -41,6 +41,10 @@ fi
 # Import exercise configuration
 source $TOP_DIR/exerciserc
 
+# If nova api is not enabled we exit with exitcode 55 so that
+# the exercise is skipped
+is_service_enabled n-api || exit 55
+
 # Skip if the hypervisor is Docker
 [[ "$VIRT_DRIVER" == "docker" ]] && exit 55
 

exercises/floating_ips.sh

@@ -38,6 +38,10 @@ fi
 # Import exercise configuration
 source $TOP_DIR/exerciserc
 
+# If nova api is not enabled we exit with exitcode 55 so that
+# the exercise is skipped
+is_service_enabled n-api || exit 55
+
 # Skip if the hypervisor is Docker
 [[ "$VIRT_DRIVER" == "docker" ]] && exit 55
 

exercises/sec_groups.sh

@@ -33,6 +33,10 @@ source $TOP_DIR/openrc
 # Import exercise configuration
 source $TOP_DIR/exerciserc
 
+# If nova api is not enabled we exit with exitcode 55 so that
+# the exercise is skipped
+is_service_enabled n-api || exit 55
+
 # Skip if the hypervisor is Docker
 [[ "$VIRT_DRIVER" == "docker" ]] && exit 55