I have a test case using a simple route inside a fabric:

  <from uri="master:FD:timer://foo?period=30000"/> or
  <from uri="master:FD:timer:foo?period=30000"/>

The route kicks off just fine, however, the period option is ignored. This route runs ever second.
Dropping the master syntax, I can see the timer work correctly, i.e

<!--from uri="timer://foo?period=30s"/-->

Test Case
1. Created new fabric - fabric:create --clean
2. Changed the demo we shipped in 4.4.1 for osgi, attached as it just has one route in it now.
3. 2. Used FMC to add camel to root profile and create a new profile. On the new profile added my bundle:

mvn:org.apache.servicemix.examples/camel-osgi/4.4.1-fuse-08-15/

4. Output of camel-route:display looks good:

FuseESB:karaf@root> camel:route-show route1 
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<route id="route1" xmlns="http://camel.apache.org/schema/spring">
    <from uri="master:FD:timer://foo?period=30000"/>
    <bean ref="myTransform" method="transform" id="bean3"/>
    <to uri="log:ExampleRouter" id="to3"/>
</route>