RFR: JDK-8180420 Set PATH for dot and pandoc in JIB

[Magnus Ihse Bursie]

We should set environment_path in jib-profiles.js to allow for "jib run" 
to use pandoc and dot.

Bug: https://bugs.openjdk.java.net/browse/JDK-8180420
Patch inline:
diff --git a/common/conf/jib-profiles.js b/common/conf/jib-profiles.js
--- a/common/conf/jib-profiles.js
+++ b/common/conf/jib-profiles.js
@@ -997,7 +997,8 @@
              ext: "tar.gz",
              revision: "2.38.0-1+1.1",
              module: "graphviz-" + input.target_platform,
-            configure_args: "DOT=" + input.get("graphviz", 
"install_path") + "/dot"
+            configure_args: "DOT=" + input.get("graphviz", 
"install_path") + "/dot",
+            environment_path: input.get("graphviz", "install_path")
          },

          pandoc: {
@@ -1005,7 +1006,8 @@
              ext: "tar.gz",
              revision: "1.17.2+1.0",
              module: "pandoc-" + input.target_platform,
-            configure_args: "PANDOC=" + input.get("pandoc", 
"install_path") + "/pandoc/pandoc"
+            configure_args: "PANDOC=" + input.get("pandoc", 
"install_path") + "/pandoc/pandoc",
+            environment_path: input.get("pandoc", "install_path") + 
"/pandoc"
          },
      };


/Magnus