Merge ~sespiros/ubuntu-security-tools/+git/ubuntu-security-tools:uaudit-fix-install-options into ubuntu-security-tools:master

[Spyros Seimenis]

[Alex Murray (alexmurray)]

LGTM - thanks.

review: Approve

diff --git a/audits/uaudit b/audits/uaudit
index 09cf3df..9fa9db7 100755
--- a/audits/uaudit
+++ b/audits/uaudit
@@ -72,8 +72,11 @@ class StaticAnalysisTool(object):
         self._install_options = install_options
 
     def install_cmd(self) -> list:
-        return ["sudo", "apt" if self._source == StaticAnalysisToolSource.DEB else "snap",
-                "install", self._install_options, self.name]
+        cmd = ["sudo", "apt" if self._source == StaticAnalysisToolSource.DEB else "snap",
+                "install", self.name]
+        if self._install_options != "":
+            cmd.append(self._install_options)
+        return cmd
 
     def exec_cmd(self, format) -> list:
         if format == "txt":