Fix regex in provider format

Author: KostasTsiounis

closed/src/java.base/share/classes/openj9/internal/security/RestrictedSecurity.java

@@ -1531,7 +1531,7 @@ private void setConstraints(String providerName, String providerInfo, boolean pr
             final String typeRE = "\\w+";
             final String algoRE = "[A-Za-z0-9./_-]+";
             final String attrRE = "[A-Za-z0-9=*|.:]+";
-            final String usesRE = "[A-Za-z0-9._:]+";
+            final String usesRE = "[A-Za-z0-9._:/]+";
             final String consRE = "\\{(" + typeRE + "),(" + algoRE + "),(" + attrRE + ")(," + usesRE + ")?\\}";
             p = Pattern.compile(
                 "\\["
@@ -1844,7 +1844,7 @@ private static void checkProviderFormat(String providerInfo, boolean update) {
                 + "(\\["                                // constraints [optional]
                     + "\\s*"
                     + "([+-])?"                         // action [optional]
-                    + "[A-Za-z0-9{}.=*|:?,/\\\\_\\s-]+"      // constraint definition
+                    + "[A-Za-z0-9{}.=*|:?,/\\\\_\\s-]+" // constraint definition
                 + "\\])?"
                 + "\\s*"
                 + "$");