Remove ConfigAdmin subsystem

It was only used as part of OSGI but we removed osgi from codbase some time ago.
Test cases for WFLY-2739
Test cases for WFLY-2739
[WFLY-2840] take scheduled timezone into account when calculating next timeout
WFLY-2784 Allow the MyFaces implementation module to access the "META-INF/**" path from the javax.faces.api dependency
Update key-tool plugin to work on jdk8
Fix JarSigner to work with JDK7 & 8
Merge pull request #5880 from ctomc/jdk8

Last fixes to make testsuite work on JDK8
Merge pull request #5866 from bmaxwell/WFLY-2840

[WFLY-2840] take scheduled timezone into account when calculating next t...
[WFLY-1523] Introduce caching for LDAP access by security realms for user searching, caching validated passwords and caching the results of group searches.
[WFLY-1523] Some minor modifications following code review of the LDAP cache implementation.
[WFLY-1848] Enable the loading of the users actual username from LDAP.

This allows a different username to be discovered compared to the one supplied by the user.
[WFLY-2880] Use the override MRR for deployment ds statistics
Merge pull request #5883 from darranl/WFLY-2848_2

[WFLY-2848] A new option to allow the users username to be re-loaded from LDAP in the management realms.
Merge pull request #5838 from petrandreev/WFLY-2739

WFLY-2739: BeanDeploymentArchive for external (WFLY) modules added twice
Merge pull request #5873 from fjuma/WFLY-2784

WFLY-2784 Allow the MyFaces implementation module to access the "META-INF/**" path from the javax.faces.api dependency
Merge pull request #5820 from ctomc/cleanup

OSGi leftovers - Remove ConfigAdmin subsystem
Merge pull request #5884 from bstansberry/ds.xml-override

[WFLY-2880] Use the override MRR for deployment ds statistics
Update to Undertow CR5
Merge pull request #5885 from n1hility/update-undertow

Update to Undertow CR5