cob_common: 0.5.2-2 in 'hydro/distribution.yaml' [bloom]

Increasing version of package(s) in repository `cob_common` to `0.5.2-2`:

- distro file: `hydro/distribution.yaml`
- bloom version: `0.5.2`
- previous version for package: `0.5.2-1`

## brics_actuator

```
* update CMakeLists
* Contributors: ipa-fxm
```

## cob_common

- No changes

## cob_description

```
* merged with ipa320
* removed Media folder
* merge with groovy_dev
* fix kinect topics for simulation
* fixes while testing in simulation
* update xacro file format
* merge with groovy_dev
* new structure
* fixed some includes and property definitions
* some missed changes
* merge with groovy_dev_cob4
* fixed gazebo_plugins
* added arm_ee_link
* fixed path to file
* fixed path to file
* renamed tray 3DOF
* Tested on simulation
* cob_description structuration
* cleanup
* update cob4 description
* renamed files
* New struture for cob repositories
* tested on robot
* cob4 integration
* cob4 integration
* bring groovy updates to hydro
* Adapt tray position
* Fixed tray powerball
* Adjust limits for tray and torso
* modify axis on mesh model
* some helper makros for default inertia
* optimize effort and joint limits + use visual mesh as collision for upper neck to give arem some more space
* visual and collision geometry of cameras are now not colliding with head_cover anymore
* update transmission for all components
* remove obsolete files
* use default settings
* update xmlns + beautifying
* fix xacro include tag deprecation
* Merge pull request #7 <https://github.com/ipa320/cob_common/issues/7> from ipa-fxm/groovy_dev
  bring groovy updates to hydro
* remove obsolete experimental files
* make lookat work with raw
* ur_connector meshes are now assimp conform
* fixed torso joint limits
* adjust limits for ur_connector
* latest changes in lookat component
* simplified lookat component
* new urdf description for lookat
* fixing simulation for hydro. Still wip
* unified torso frames
* unified head frames
* Revert "depth joint for kinect implemented"
  This reverts commit f3449462cd05a5efc8f47252e28366d6a495acb2.
* offset back in lbr.urdf.xacro else wrong calibration
* fixed typo
* Removed safety controller urdf/ur_connector/ur_connector.urdf.xacro
* Renamed ur_connector
* New model descriptions for cob3-7
* offset for lbr set to 0
* Solved xacro Warning in hydro.
* Fixed type error
* changes for hydro gazebo, still not fully working
* depth joint for kinect implemented
* new component base_placement for whole body moveit group
* added fixed links for calibration
* new urdf description for lookat
* Contributors: Alexander Bubeck, Denis Štogl, Jannik, Jannik Abbenseth, abubeck, ipa-cob3-5, ipa-cob3-7, ipa-fmw, ipa-fxm, ipa-nhg
```

## cob_srvs

```
* update CMakeLists
* Contributors: ipa-fxm
```

## desire_description

```
* merge with groovy_dev
* fix file to mesh files
* fixes while testing in simulation
* merge with groovy_dev_cob4
* fixed gazebo_plugins
* update transmission for all components
* update xmlns + beautifying
* Solved xacro Warning in hydro.
* changes for hydro gazebo, still not fully working
* Contributors: Denis Štogl, abubeck, ipa-fmw, ipa-fxm
```

## raw_description

```
* merge with groovy_dev_cob4
* fixed gazebo_plugins
* fixed path to file
* update transmission for all components
* update xmlns + beautifying
* fix xacro include tag deprecation
* Merge pull request #7 <https://github.com/ipa320/cob_common/issues/7> from ipa-fxm/groovy_dev
  bring groovy updates to hydro
* harmonize with cob structure
* upstream changes
* fixing simulation for hydro. Still wip
* Solved xacro Warning in hydro.
* also add urdf include for tf
* small changes for new camera setup
* changes for hydro gazebo, still not fully working
* changed wheel positions to make rotation right, also changed some bugs in the asymetric tower
* changed mesh origin to the center of the base plate
* deleted ur10 description
* Contributors: Denis Štogl, abubeck, ipa-bnm, ipa-fxm, ipa-nhg, raw3-1 administrator
```