FALCON-2284 removing the extra character at the start of extension-name in list API

Author: Pracheer Agarwal <pracheer.agarwal@inmobi.com>
Author: Pracheer Agarwal <pracheeragarwal@gmail.com>
Author: Pracheer Agarwal <pr@im2216-x0.corp.inmobi.com>

Reviewers: @pallavi-rao

Closes #371 from PracheerAgarwal/list and squashes the following commits:

7c66a4e [Pracheer Agarwal] removing the extra character at the start of extension-name in list API
7814fba [Pracheer Agarwal] Merge branch 'master' of https://github.com/apache/falcon
ba60452 [Pracheer Agarwal] Merge branch 'master' of https://github.com/apache/falcon
ed65aa0 [Pracheer Agarwal] Merge branch 'master' of https://github.com/apache/falcon
9ff05df [Pracheer Agarwal] Merge branch 'master' of https://github.com/apache/falcon
9c2f0a5 [Pracheer Agarwal] Merge branch 'master' of https://github.com/apache/falcon
9cd8c17 [Pracheer Agarwal] Merge branch 'master' of https://github.com/apache/falcon
778c579 [Pracheer Agarwal] Merge branch 'master' of https://github.com/PracheerAgarwal/falcon
e39808d [Pracheer Agarwal] Merge branch 'master' of https://github.com/apache/falcon
a932633 [Pracheer Agarwal] Merge branch 'master' of https://github.com/apache/falcon
fda3b28 [Pracheer Agarwal] Merge branch 'master' of https://github.com/apache/falcon
a93d71a [Pracheer Agarwal] Merge branch 'master' of https://github.com/PracheerAgarwal/falcon
e3728d5 [Pracheer Agarwal] Merge branch 'master' of https://github.com/apache/falcon
066c8e2 [Pracheer Agarwal] Merge branch 'master' of https://github.com/apache/falcon
b20f044 [Pracheer Agarwal] Merge branch 'master' of https://github.com/apache/falcon
7f572a1 [Pracheer Agarwal] Merge branch 'master' of https://github.com/apache/falcon
46042fd [Pracheer Agarwal] Merge branch 'master' of https://github.com/PracheerAgarwal/falcon
daa3ffc [Pracheer Agarwal] FALCON-2225 extension owner added for trusted extensions
622cae4 [Pracheer Agarwal] FALCON-2225 extension owner added for trusted extensions

(cherry picked from commit 3fd11e80ebba64a22b18e5e3baec1ca7e1e54e99)
Signed-off-by: Pallavi Rao <pallavi.rao@inmobi.com>
diff --git a/prism/src/main/java/org/apache/falcon/resource/proxy/ExtensionManagerProxy.java b/prism/src/main/java/org/apache/falcon/resource/proxy/ExtensionManagerProxy.java
index 65618fe..033b6cc 100644
--- a/prism/src/main/java/org/apache/falcon/resource/proxy/ExtensionManagerProxy.java
+++ b/prism/src/main/java/org/apache/falcon/resource/proxy/ExtensionManagerProxy.java
@@ -99,8 +99,10 @@
             @DefaultValue("") @QueryParam("doAs") String doAsUser) {
         checkIfExtensionServiceIsEnabled();
         if (StringUtils.isNotBlank(extensionName)) {
+            extensionName = extensionName.substring(1);
             getExtensionIfExists(extensionName);
         }
+
         try {
             return super.getExtensionJobs(extensionName, sortOrder, doAsUser);
         } catch (Throwable e) {