SSDM-2504 : V3 AS API - search cache size configuration in openbis.conf

...a/ch/systemsx/cisd/common/parser/MemorySizeFormatter.java

...java/ch/systemsx/cisd/common/parser/PercentFormatter.java

...urce/java/ch/systemsx/cisd/common/test/AssertionUtil.java

.../systemsx/cisd/common/parser/MemorySizeFormatterTest.java

.../ch/systemsx/cisd/common/parser/PercentFormatterTest.java

...sis/openbis/generic/server/api/v3/cache/ISearchCache.java

.../sis/openbis/generic/server/api/v3/cache/SearchCache.java

...neric/server/api/v3/cache/SearchCacheCleanupListener.java

.../api/v3/executor/method/AbstractSearchMethodExecutor.java

openbis/source/java/ehcache.xml

.../openbis/generic/server/api/v3/cache/SearchCacheTest.java