better support for custom folder installation (#526)

* Better support for custom folder installation

Signed-off-by: Emmanuel Leroy <emmanuel.leroy@oracle.com>

* fix case when oracle_home is not a dir. will return None.
Signed-off by: Emmanuel Leroy <emmanuel.leroy@oracle.com>

* fix tests that were failing due to exception raised for not finding the wlserver home
Leaving it to downstream to check that wl_home is not None.
Signed-off by: Emmanuel Leroy <emmanuel.leroy@oracle.com>

Author: streamnsight

core/src/main/python/wlsdeploy/util/weblogic_helper.py

@@ -13,6 +13,8 @@
 from wlsdeploy.exception import exception_helper
 from wlsdeploy.util import string_utils
 
+import os
+import re
 
 class WebLogicHelper(object):
     """
@@ -187,6 +189,14 @@ def get_weblogic_home(self, oracle_home):
             else:
                 wl_home = oracle_home + '/wlserver_10.3'
 
+            # if the path is not a valid directory, try to infer it from the pattern
+            if os.path.isdir(oracle_home) and not os.path.isdir(wl_home):
+                dirs = [f for f in os.listdir(oracle_home) if re.match(r'wlserver.*', f)]
+                if len(dirs) > 0:
+                    wl_home = oracle_home + '/' + dirs[0]
+                else:
+                    wl_home = None
+                
         return wl_home
 
     def is_weblogic_version_or_above(self, str_version, use_actual_version=False):