[NEXUS-6688] Add more robust url validation (based on https://github.com/chriso/validator.js)
[NEXUS-3235] Only allow http and https protocols, not ftp
fix sp
Merge pull request #638 from sonatype/url-validation

REVIEW: [NEXUS-6688] Add more robust url validation
Remove nexus-crypto-plugin (registration of BC provider is automatic with OSGi)
Cleanup capture of test-logs and clear Karaf data/cache on shutdown to avoid filesystem bloat running modern ITs
NX-485: replace legacy plugin-repository with Karaf system repository
Fix nexus-testsuite-support ITs (located separate to testsuites)
Cleanup poms
Tweak replace token to cover OSS+PRO editions
Avoid duplicate token