socks proxy support SB-90
http proxy support
#SB-179: Implement proxy support for the key managing facility

Non-functional commit: Polished up the code a bit.
#SB-90: Implement facility for managing keys in the keystore and truststore

Minor fix to the test.
Merge branch 'SB-90' of github.com:strongbox/strongbox

Conflicts:
	strongbox-security-api/src/main/java/org/carlspring/strongbox/security/certificates/KeyStores.java
	strongbox-security-api/src/test/java/org/carlspring/strongbox/security/certificates/KeyStoresTest.java