Blueprint property placeholders, sometimes cannot return correct PID value for key when installing profile to Fabric.

Issue

• There are issues with Blueprint property placeholders, which sometimes cannot return correct PID value for key when installing profile to Fabric.
  F.e. io.fabric8.zookeeper/zookeeper.url may return literally "${zookeeper.url}" instead of actual value like

Fabric8:admin@container-1> config:list | grep zookeeper.url
   zookeeper.url = IP:2181

• Which causes

java.lang.IllegalArgumentException: Property with key not found in properties from text: at org.apache.camel.component.properties.DefaultPropertiesParser$ParsingContext.getPropertyValue(DefaultPropertiesParser.java:268)

• And this issue is not only with Fabric PIDs, but also for our own. But when we start bundles one-by-one there is no problems with it.