1155513 [RFE] - Search for package in all consumers

Example call:
```
body = { "criteria" : { "filters" : { "profile.name"  : "rubygem-builder" }, "fields" : [ "consumer_id", "profile.$" ] } }
pic.POST('/pulp/api/v2/consumers/profile/search/', body)
```
Returns the detail of the package `rubygem-builder` in all the consumers
We can't use the ^^^^^^ for a new section because then this is included as a peer of REST API Changes instead of a subheading. I recommend removing line 35 and make this bold using the *.